I face a problem with Opera Browser. When I try to connect using "Show your human..." although I type the right number I always get the error "You failed to correctly answer the math problem. " I've tried also with Chrome, Edge and CCBrowser and it works fine.
That doesn't come from wpForo but from some plugin.
This issue is not related to wpForo, you should contact that plugin support team.
Thanks a lot for your answer.
Is there anyway to disable this feature? Or, at least the typed number to become visible?