Скачать или смотреть TrackMania Error Code 00000027 (Quick fix)

You are currently banned from Trackmania (YEPTREE - 00000027)

Read Rules: https://doc.trackmania.com/general/co...

You're probably getting banned because you are leaving ranked matches, even due to internet issues, is considered sabotage.
This hurts your teammates, so most games have rules that punish frequent disconnections. If your internet is unreliable, it's best to avoid ranked mode to prevent getting banned.

To fix this try the following
Try close the game and reopen it by opening Ubisoft connect first and not from a shortcut

Close Trackmania completely.
Open Ubisoft Connect manually.
Click on Trackmania inside Ubisoft Connect to launch it.

Quit Ubisoft connect and restart the game

Re-install the game