1,2, 4. Please take a screenshot and link to the page you are having problems with, I can’t find it on your website.
3. You can go to file zihom/inc/elementor/widgets/users.php and edit function get_user_social().
5. Please recheck: https://prnt.sc/rBi5zNVJWBTi
6. The PHP version you are using is 7.4, it is still working properly
7. I fixed this error, please rechekc.