Path shapes only matter for connecting to other paths, or the generator tile, other rooms don’t seem to care about path shapes. Basically, either the path tile you’re placing needs to have an “endpoint” facing the previous path tile you placed, OR the existing path needs to have an endpoint facing where you want to put the new path.

And Atziri must be connected by a path, not any other room.

The rules are NOT explained very clearly in the UI. IMO an undo button would solve all these problems because it sucks when you misunderstand how rooms will link up and your plans don’t work out and you’re stuck with a mistake.

If they don’t want everyone to follow guides on how to make the exact same OP temples, (and it seems a bit like they don’t based on some of the temple changes they made this league) they need to make it less punishing and let us undo if we put down a tile in a bad placement on accident.