Hello,
Thank you so much for purchasing our theme and contacting our support center.
Please post different questions via separate topics on the forum.
1/ Try to disable Motion Effects for elements/sections on mobile.
2/ Read docs of Elementor plugin – https://elementor.com/help/500-error/ https://elementor.com/help/publish-update-button-not-work/
Regards
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.