Possible conflict with reCaptcha

Hello,

My clients recently developed issues logging into the admin pages of their website via the standard wp-login.php page, and I believe this may have occurred following updates to CleanTalk (and other plug-ins).

They are currently running Version 5.183 of Anti-Spam by CleanTalk.

When attempting to login, they received the following error:

Authentication failed.
User response is missing.

If we deactivated the CleanTalk plug-in they were able to login as normal.

Through a bit of experimentation I have discovered that I can get CleanTalk running as normal and login only if I disable the reCaptcha by BestWebSoft (Version 1.67) on the login form, so there appears to be some conflict when both plug-ins are interacting with that form.

Just thought I would let you know so you can have a look, and maybe save anyone else from digging around for the solution.

Thanks

Mari