It seems the problem is that i made some things in fixed positions of the window, and other things in automatic godot positions relative to the window size. It looked fine in a fixed size window in desktop version, but in web is doing weird things, and the fullscreen brokes too because of that. Also it seems that in 2k screen and 1080p screens it loads the game in different sizes, so if I you put the zoom to 1.25x it works right in 1080p. Pretty weird, i would have to study it, thank you for the help