1/ We’ve tried to edit a static block and page on your site using Elementor. It works fine – https://prnt.sc/1uzihkj https://prnt.sc/1uzij61 Please try to clear all cache and check one more time.
2/ Clear cache and check. Here is what we can see – https://prnt.sc/1uzinzk
3/ Could you, please, provide us with the screenshot of server usage statistics that displays what processes/requests cause the issue?
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.