I think I've read every single answer on this topic so far, but to no help.

Recaptcha is working now, but when I turn on the "Active K2 user profile", recaptcha dont show.

Yes - I typed in public and private key in the K2 anti spam fields. Standard Joomla recaptcha is set to none. How ever - If i set this to Captcha /reCaptcha - It will show an error - that I have to set an public key, even though I have set both public and private key, also in the plugin manager.

So right now
- Plugin Recaptcha is enabled and both keys are typed in
- Standard joomla Recaptcha is set to none
- K2 recaptcha has both keys typed in
- Active K2 user profiler is deactived

Recaptcha is working and showing - But if I turn on K2 user profile on, reCaptcha isnt showing. So how do I fix that?