If you are one such player, keep reading our guide as we list every possible reason why you can't join the private server in Roblox while sharing troubleshooting steps to fix it.

On July 30, 2009, Roblox added a feature called groups. ... Gamers can create or join them based on shared interests. On Roblox, every player has access to a maximum of 100 groups.

Roblox allows players to create or join groups that highlight their own interests on the platform. The creator can change the name as well, but there's a fee involved. Your login session has expired.