UMG - Buttons not working in mobile?

I have been trying everything - Button Pressed, Button Clicked, mouse click for touch events, disable gamepad, remove EVERY single other UMG, adding 1000 to Z order of the button, and for some reason I can’t make one single button work. This is not my first time on mobile, and I didn’t had this issue last time. Could anyone point me to any possible thing I’m doing wrong? Many thanks in advance, stuck on this for about 2 hours now.