I currently have around 6 differment domains registered.
I dont have issues with any except for 2 of them:
steam-lua.it
and
tritonac.it
both of them are running on 1 machine. (I also have 3rd domain thats running there and without any issues) What it does when i type tritonac.it into the url it will automatically send me to steam-lua.it i dont know how or why. but cloudflare does it somehow. I didnt change any thing didnt add any rules. it just does it