Hey there!
I added a user via Crowd and put him into the group Users (I deleted the default group confluence-users due to translation, we are located in german. The new group has the same permissions.).
Now the user resets his password to put a password to do the login. Password reset is working, mail is coming, the user puts his new password. Now he wants to login and an error appears: Following errors appeared. Please retry the login and fill out the captcha.
This happens all the time, you can reset the password as often as you want to, always the same error. So I gave the user administrator permissions and then I gave him again default user permissions. Now its working.
Any ideas?