Astrosus PM'd me about making the game use AutoJoin. This is a very quick reworking to support AutoJoin. A new global variable has been added to eLogin: IsAutoJoin, set to 1. A new group was added: AutoMainRoom. Button:on clicked now checks for IsAutoJoin and activates AutoMainRoom & connects to the signalling server.
I make no claims on robustness for this version. It is what it is.