Black triangles

Hello, I am using an RPM SDK from FAB on the Unreal Engine 5.3. Everything works perfectly for the PC version, but when I use the mobile version, during player customization, their head becomes covered in black triangles. What could be the reason for this?

Hello @agha809 ! Sorry there has not been a response to this so far, looking into the issue for you now and will update you as soon as I can!

Thank you very much. Problem in Unreal Engine 5 mobile version(Android). The problem started after Unreal 5 for Android switched to using only OpenGL ES3. Previously, in UE4 versions, ES2 could be used. Thanks in advance