I am currently sitting with the problem of getting 'incorrect' captcha's from Acymailing, RSforms, Chronoforms5 and chronoforms V4. I have tested on xampp, wamp, live hosting and a bunch of others, In case it was my on my side. I do have the latest Joomla installed.
I work with a group of people and we all have the same issue, Here is what happens:
This is the captcha that i get (chronoforms5):
If I enter that captcha it fails, however if I open Firebug and inspect the image, this is what i see:
Now if i enter that captcha its successful, And I have this issue with virtually all of the captcha's on this website, including: RSforms, Chronoforms and Acymailing.
Any Help with this Issue would be Fantastic.
So in the end it was empty image tags <img src="" />
or empty background:url();
. I have no Idea why. But after an entire day, I finally figured it out. Thank you all for your effort.