OJS Version: OJS 220.127.116.11
Since yesterday, our users are unable to register on our site and get the " You did not pass the validation check used to prevent spam submissions." message
The only warning in PHP log file is: “Call to deprecated/non-functional Submission::getLocalizedSubject.”
As per the other threads about similar issues, we have double-checked open, captcha keys settings in the PHP config files.
Also on the Google recpatcha console we see the following:
We detected that your site is not verifying reCAPTCHA solutions. This is required for the proper use of reCAPTCHA on your site. Please see our developer site for more information.
We have not changed anything and the captcha was working fine earlier: