One problem solved, next one occures^^
When I try to log in with a duo-account, I get a "Username or password incorrect" error. To test it, I created a new duo-account -> same problem. I also tried "Change password" and saved the password in .txt, so username and password are definietly correct, but the problem still exists.
These accounts are:
duo-XVNWCAZ4HSEF1CD
duo-TGFE4BKWSJ4FYPD
Greetz
Buddha