HUD and UI not visible after package.

I have a project made in version 4.19 then I updated it into 4.21. now HUD and UI are not working. Its an android project. Main menu works fine but when the main game level starts, the virtual joystics, buttons, health bar, score everything vanishes as if they never where added to viewport. They are working fine in unreal editor but not after packaging. I am having 2 more problems simultaneously and that is skeletal mesh mesh not being rendered because epic put joint count limit on it and many of the particles not rendering. The project is also not downgrading to 4.19 or upgrading to 4.22. My brain is burning right now. At least somebody help me with the umg. I hope I can be able to fix this one.