I didn't do any manual building(I used the built-in game exporter in Gdevelop to make my web builds). Gdevelop doesn't have an option to cook assets. I'll have to post on the Gdevelop forums to see if anyone knows what caused the problem.
Okay then , but if you still have the Ui Issue try having your UIi made within a 2D program then export that as an image an see if it works , if you haven't figured a solution yet !
