Sorry for the late reply SweetCaptcha.
Just tried out the new version, but I don’t see any difference.
The problem is that files are being loaded from your host which are not using https, and therefore are marked as unsafe content. The latest chrome blocks this by default.
A look at the generated html while being connected over https:
<div id="sweetcaptcha-wrapper"><script type="text/javascript" src="https://www.sweetcaptcha.com/min/?f=res/js/captchi.js"></script><link rel="stylesheet" rel="text/css" href="https://www.sweetcaptcha.com/min/?f=res/css/captchi.css" /><script type="text/javascript">jQuery(function(){SWEETCAPTCHA.path("https://testsite/wp-content/plugins/sweetcaptcha-revolutionary-free-captcha-service/library/sweetcaptcha.php");})</script><div id="captchi" style="position:relative"><div style="position:absolute;bottom:0px;right:0px;width:150px;height:14px;background:url('https://www.sweetcaptcha.com/images/sc_strip.png') no-repeat right bottom;"><div style="position:absolute;bottom:1px;right:18px;font-size:8px;font-family:verdana;">Powered by <a style="text-decoration:none;font-size:8px;font-family:verdana" href="https://sweetcaptcha.com" target="_blank">Sweet Captcha</a></div><img src="https://www.sweetcaptcha.com/pixel.php?app_id=8064" width="1" height="1" alt="" /></div><div style="width:200px;text-align:left">Verify your real existence, <br />Drag the biggest seed to the flowerpot</div><span class="holder" style="background: url('https://www.sweetcaptcha.com/upload/question_34.png') no-repeat right top; display: block; width: 80px; height: 95px; position: absolute; right: 10px; top: 20px;"></span><ul style="list-style-type: none;"><li style="display: inline;" rel="e7a1839627e67b1"><img alt="captcha" src="https://www.sweetcaptcha.com/upload/answer_183.png"/></li><li style="display: inline;" rel="d40496a9becdf2a"><img alt="captcha" src="https://www.sweetcaptcha.com/upload/answer_212.png"/></li><li style="display: inline;" rel="e137d6c8579bf97"><img alt="captcha" src="https://www.sweetcaptcha.com/upload/answer_51.png"/></li><li style="display: inline;" rel="f16540e0c336bd5"><img alt="captcha" src="https://www.sweetcaptcha.com/upload/answer_129.png"/></li></ul><div style="width:200px;text-align:left"><a class="reset">Reset</a></div><input type="hidden" name="sckey" value="a8bdda5dc12426f" /><input type="hidden" name="scvalue" value="0" /><input type="hidden" name="scvalue2" value="0" /></div></div>
Because I redirect all http to https, images and other things on my side aren’t a problem. Images in general aren’t a problem, they only show a warning in chrome. Scripts do cause a problem, just like css I believe. Therefore sweetcaptcha doesn’t work under https, and isn’t displayed correctly.
