Unfortunately I tried several times and the game stayed in this room every time I tried to access to servers.
About the background repeating, generally the backgrounds are normal when I create a level (no repeats), when I export the level and play it (outside the level editor), this is where backgrounds 1 and 2 repeats. The files for the backgrounds are not the same if you look at the room files, its probably mod.json that is doing something wrong.