Trackmania Forever players can use the Njoy live server viewer to see which community servers are available before opening the game. The viewer shows the server name, game family, mode, current map and player capacity when live data is available.
Reading the live status
A server marked online may still be idle when no driver is racing. Treat the map, player count and refresh time as a current snapshot. If a field is unavailable, the dedicated server has not supplied that value yet.
Adding a server to Favorites
Choose Add to Favorites. Trackmania should open the corresponding tmtp://#addfavourite=... command in the game client. The website account and the game account remain separate.
Nations Forever and United Forever
Nations Forever is the free Stadium edition, while United Forever is the full edition with additional environments and content. See the installation guide and use your own valid purchase or key when activation is requested.
For server questions, use the Njoy forum and include the server name, mode and approximate time.