Hi clinxr,
Welcome to the forum! First of all, please make 100% sure you type in the username/password correctly. If yes, please make sure the internet connection works. Try to press the power button until the phone vibrates 3 times. then power back on and try. If you still can't log in, try the following and in between them see if logging in works:
- Try to log in to Nokia Store application: Menu > Nokia Store.
- Try to reset the password here.
- Make a backup with Nokia Suite. Reinstall the phone software. The process is the same as when updating with Nokia Suite, but at the end select "Reinstall".
- Type in *#7780# followed by lock code (default is 12345). This is soft reset, no data lost. The settings will be restored to factory state.
Hope you will be able to log in!
Jampe