For everyone with the same issue: Login is still possible through the forum itself.

This is what I do now, so I can keep reCAPTCHA. But login to the backend only works by login to the forum, and then go to the wp-admin.

Easy workaround, but not the solution.

Just make sure all reCAPTCHA Options are enabled when you activate it first time. You'll not have any issue. in addition, we'll improve this in next release to avoid any kind of problems.

Ah... Just to make it clear one more time: The issue will NOT appear when every option is set to ON, when the reCAPTCHA credentials have been added, and I save the changes?

After that, I can set the options for WP logins (for example) to OFF and will still work, and not give me the reCAPTCHA error message again when I login as admin??

Sorry but I like to have answers as clear as that. Fuzzy proof. Avoids to ask again and again 10 more times 😉

The same problem, I turned everywhere "ON".

And how to make that after registration and confirmation via e-mail the link led to the forum and not to the user's profile?

Please make sure you don't have other reCAPTCHA plugins active. Also, try to deactivate then activate it again.

Please don't ask off-topic questions. You can open another topic with proper title.