unable to sign in
First of all, thank you for using wpForo.
This kind of problem is usually caused by a conflict other plugins. Please deactivate plugins one by one and check after each deactivation.
It turned out to be: Recaptcha?
'Uber Recaptcha', and 'Invisible Recaptcha'are both not supported by your inlogform I believe. We are now looking for a alternative. Great forum by the way, we can't wait to see it in action