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    Everton,<br>
    <br>
    I've just had a dig through my mail archives.<br>
    <br>
    Some folks at Brunel University in the UK had the same problem. Here
    is their comment on the problem and how they fixed it:<br>
    <br>
    <font color="red">Reason for reCAPTCHA problem we understood relates
      to the firewall and IPV6 settings.<br>
      Recently we had firewall and network changes implemented to our
      data centre which had impact on IPV6 related connectivity in Linux
      environment.<br>
      We have disabled IPV6 on dropoff server and it worked fine without
      any issues. <br>
    </font><br>
    Hope that helps,<br>
    Jules.<br>
    <br>
    <div class="moz-cite-prefix">On 05/11/2020 17:09, Everton Bruno
      Bernardi wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:WM!7422710f3eaeb55443379f5c4d7bf138055b8d818cb3ae8ee91ec60b534730aefc04943e18fa45c4a253355502d7c207!@mx.jul.es">
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        <div class="gmail_default"
          style="font-family:tahoma,sans-serif;font-size:small;color:#20124d">Jules,</div>
        <div class="gmail_default"
          style="font-family:tahoma,sans-serif;font-size:small;color:#20124d"><br>
        </div>
        <div class="gmail_default"
          style="font-family:tahoma,sans-serif;font-size:small;color:#20124d">Thanks
          for that. I changed the code you sent me but it had no effect.
          The same error occurs.</div>
        <div class="gmail_default"
          style="font-family:tahoma,sans-serif;font-size:small;color:#20124d">Am
          I able to send any debug information to help you out? If so,
          please tell me how can I get it.</div>
        <div class="gmail_default"
          style="font-family:tahoma,sans-serif;font-size:small;color:#20124d"><br>
        </div>
        <div class="gmail_default"
          style="font-family:tahoma,sans-serif;font-size:small;color:#20124d"><br>
        </div>
        <div class="gmail_default"
          style="font-family:tahoma,sans-serif;font-size:small;color:#20124d">Regards,</div>
        <div class="gmail_default"
          style="font-family:tahoma,sans-serif;font-size:small;color:#20124d"><br>
        </div>
        <div class="gmail_default"
          style="font-family:tahoma,sans-serif;font-size:small;color:#20124d">Everton</div>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr" class="gmail_attr">On Thu, Nov 5, 2020 at 12:10
          PM Jules <<a href="mailto:Jules@zend.to"
            moz-do-not-send="true">Jules@zend.to</a>> wrote:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0px 0px 0px
          0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
          <div> Hi Everton,<br>
            <br>
            I've just compared the code from 5.03 to the latest, for
            this specific problem.<br>
            <br>
            Try applying this patch (manually with a text editor is just
            fine!) to /opt/zendto/www/verify.php:<br>
            <br>
            <tt>97,101c110,111</tt><tt><br>
            </tt><tt><             // Old version 1 code.</tt><tt><br>
            </tt><tt><             // $resp =
              recaptcha_check_answer($reCaptchaPrivateKey,</tt><tt><br>
            </tt><tt><             //                               
              getClientIP(),</tt><tt><br>
            </tt><tt><             //                               
              $_POST["g-recaptcha-response"]);</tt><tt><br>
            </tt><tt><             $recaptcha = new
              \ReCaptcha\ReCaptcha($reCaptchaPrivateKey);</tt><tt><br>
            </tt><tt>---</tt><tt><br>
            </tt><tt>>             $recaptcha = new
              \ReCaptcha\ReCaptcha($reCaptchaPrivateKey,</tt><tt><br>
            </tt><tt>>                            new
              \ReCaptcha\RequestMethod\CurlPost());</tt><br>
            <br>
            If that helps, apply this (very similar) patch to
            /opt/zendto/www/pickup.php as that's the other place this
            call appears:<br>
            <br>
            <tt>130c143,144</tt><tt><br>
            </tt><tt><           $recaptcha = new
              \ReCaptcha\ReCaptcha($reCaptchaPrivateKey);</tt><tt><br>
            </tt><tt>---</tt><tt><br>
            </tt><tt>>           $recaptcha = new
              \ReCaptcha\ReCaptcha($reCaptchaPrivateKey,</tt><tt><br>
            </tt><tt>>             new
              \ReCaptcha\RequestMethod\CurlPost());</tt><br>
            <br>
            I've never managed to figure out why sites which have been
            working perfectly well on the default suddenly stop doing
            so, with apparently no changes anywhere (except at Google?).
            But using the CurlPost() technique seems to work well for
            everyone.<br>
            <br>
            Let me know how you get on.<br>
            <br>
            Cheers,<br>
            Jules.<br>
            <br>
            <div>On 05/11/2020 14:54, Everton Bruno Bernardi wrote:<br>
            </div>
            <blockquote type="cite">
              <div dir="auto">Hi Jules,
                <div dir="auto"><br>
                </div>
                <div dir="auto">Thanks for your considerations.</div>
                <div dir="auto">Unfortunately this is happening to all
                  of our users (including external).</div>
                <div dir="auto"><br>
                </div>
                <div dir="auto">I've already tried on other browsers and
                  the same happens.</div>
                <div dir="auto"><br>
                </div>
                <div dir="auto"><br>
                </div>
              </div>
              <br>
              <div class="gmail_quote">
                <div dir="ltr" class="gmail_attr">Em qui, 5 de nov de
                  2020 11:18, Jules <<a href="mailto:Jules@zend.to"
                    target="_blank" moz-do-not-send="true">Jules@zend.to</a>>
                  escreveu:<br>
                </div>
                <blockquote class="gmail_quote" style="margin:0px 0px
                  0px 0.8ex;border-left:1px solid
                  rgb(204,204,204);padding-left:1ex">
                  <div> Everton,<br>
                    <br>
                    Please can you try a couple of things:<br>
                    1. Close all your browser tabs except 1 showing
                    something like Google's home page. Clear your
                    browser cache completely, then quit and restart your
                    browser. Does the problem still occur?<br>
                    2. Try from an incognito/private browser window.
                    Does that make it behave?<br>
                    <br>
                    If number 2 makes it behave, then the browser cache
                    isn't being fully cleared, as that's the only
                    important difference as far as a new tab is
                    concerned.<br>
                    <br>
                    Anyone else seeing this problem?<br>
                    <br>
                    Cheers,<br>
                    Jules.<br>
                    <br>
                    <div>On 05/11/2020 13:31, Everton Bruno Bernardi via
                      ZendTo wrote:<br>
                    </div>
                    <blockquote type="cite">
                      <div dir="ltr">
                        <div class="gmail_default"
style="font-family:tahoma,sans-serif;font-size:small;color:rgb(32,18,77)">Hi
                          there,</div>
                        <div class="gmail_default"
style="font-family:tahoma,sans-serif;font-size:small;color:rgb(32,18,77)"><br>
                        </div>
                        <div class="gmail_default"
style="font-family:tahoma,sans-serif;font-size:small;color:rgb(32,18,77)">Recently
                          we've been facing the following issue with
                          ZendTo (version 5.03 - a lot old, I know):</div>
                        <div class="gmail_default"
style="font-family:tahoma,sans-serif;font-size:small;color:rgb(32,18,77)"><br>
                        </div>
                        <div class="gmail_default"
style="font-family:tahoma,sans-serif;font-size:small;color:rgb(32,18,77)">
                          <div><img alt="image.png"
                              moz-do-not-send="true" width="452"
                              height="275"><br>
                          </div>
                        </div>
                        <div><br>
                        </div>
                        <div>
                          <div class="gmail_default"
style="font-family:tahoma,sans-serif;font-size:small;color:rgb(32,18,77)">I've
                            confirmed the reCAPTCHA keys and everything
                            seems to be correct.</div>
                          <div class="gmail_default"
style="font-family:tahoma,sans-serif;font-size:small;color:rgb(32,18,77)">What
                            could I do in order to know what's really
                            happening?</div>
                          <div class="gmail_default"
style="font-family:tahoma,sans-serif;font-size:small;color:rgb(32,18,77)"><br>
                          </div>
                          <div class="gmail_default"
style="font-family:tahoma,sans-serif;font-size:small;color:rgb(32,18,77)"><br>
                          </div>
                          <div class="gmail_default"
style="font-family:tahoma,sans-serif;font-size:small;color:rgb(32,18,77)">Thanks
                            in advance.</div>
                          <div class="gmail_default"
style="font-family:tahoma,sans-serif;font-size:small;color:rgb(32,18,77)"><br>
                          </div>
                          <div class="gmail_default"
style="font-family:tahoma,sans-serif;font-size:small;color:rgb(32,18,77)">Regards</div>
                          <br>
                        </div>
                        -- <br>
                        <div dir="ltr">
                          <div dir="ltr"><font face="georgia, serif"><i><a
href="http://google.com/+EvertonBrunoBernardi" rel="noreferrer"
                                  target="_blank" moz-do-not-send="true">Everton
                                  Bruno Bernardi</a></i></font><br>
                            <br>
                            <br>
                          </div>
                        </div>
                      </div>
                      <br>
                      <fieldset></fieldset>
                      <pre>_______________________________________________
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</pre>
                    </blockquote>
                    <br>
                    <pre cols="72">Jules

-- 
Julian Field MEng CEng CITP MBCS MIEEE MACM


<a href="http://www.Zend.To" rel="noreferrer" target="_blank" moz-do-not-send="true">www.Zend.To</a>
Twitter: @JulesFM
</pre>
                  </div>
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            </blockquote>
            <br>
            <pre cols="72">Jules

-- 
Julian Field MEng CEng CITP MBCS MIEEE MACM


<a href="http://www.Zend.To" target="_blank" moz-do-not-send="true">www.Zend.To</a>
Twitter: @JulesFM
</pre>
          </div>
        </blockquote>
      </div>
      <br clear="all">
      <div><br>
      </div>
      -- <br>
      <div dir="ltr" class="gmail_signature">
        <div dir="ltr"><font face="georgia, serif"><i><a
                href="http://google.com/+EvertonBrunoBernardi"
                target="_blank" moz-do-not-send="true">Everton Bruno
                Bernardi</a></i></font><br>
          <br>
          <br>
        </div>
      </div>
    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">Jules

-- 
Julian Field MEng CEng CITP MBCS MIEEE MACM


<a class="moz-txt-link-abbreviated" href="http://www.Zend.To">www.Zend.To</a>
Twitter: @JulesFM
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