Hello! I set up and crossplay between Betacraft and Classicube on my server (thanks to icanttellyou.) But theres a problem with something, my goal is that every betacraft player needs to be sent to a specific map, that has classic blocks. I know how to setup the classic fb map. I just don't know how to make betacraft players join there.

Does anyone know how i can make that?
 

For one, the Betacraft server list is entirely static so the guide is pointless. However there will be a new one once Betacraft V2 comes out. For the whole warping thing you use a OnPlayerConnectEvent handler to check if the players username ends in + and if not warp them to the classic freebuild map on join, also make sure to handle map joins with the HandleJoinedLevel event, if you don't like that then parse the command and check if it's /goto, and if so cancel the command with a generic message.