Upgrade TMNF to TMNU

[Clueless Fish]

I have since brought the complete pack and i can play everything fine loged in with my main account when I go to upgrade from TMNF to TMNU it wont reconise my password but it is correct as it is the same account that is being used for the other games any idea on how to fix this

[NoSpax]

First, check if you can login on this website: https://player.trackmania.com with your username and password. If you can't, try to recover it and set a new one.
Alternatively, go into your profile (ingame) and change the password into the same one (you can copy paste from windows).
After that, allow changes to propagate (~20 seconds) and hit the back button. TMNF/TMUF may ask to save, do it. Wait and then try to login in the above website.
Go back into TMNF and do the account upgrade, if not done. Save that. Start up TMUF, login. Check if Firewall Stuff is OK. Should do. I have TMNF and TMUF installed, both using the same profile.

[BestNoob]

If youre not able to login because your PASSWORD is to LONG (must be shorter than 10 digits)
here is the direct downlaod link files.trackmaniaforever.com/tmunitedforever_setup.exe