Hello,
Elementor > Settings > Post types > enable Elementor for static blocks, then edit Footer static block using Elementor.
Theme Options > Speed Optimization > Menu Dropdown Ajax Loading, Menu Dropdown Cache, Menu Cache, Static Blocks Cache > Off. Activate mentioned options once all changes to the header/menu will be done.
If you need any further assistance, provide temporary wp-admin access, so we can take a closer look.
Create an account via Dashboard (Users > Add new) with administrator role http://prntscr.com/s3rc9m > provide us with username and password via the Private Content area http://prntscr.com/s5mao7 You can use any email for it.
Regards