Hi poeticstore,
Ok, if you have tried disabling all your plugins and it made no difference (and you have also increased your memory limit, as advised by Elementor support) then I can only think of 3 other things to try:
1./ Try activating the default WP theme and see if that helps/see if it is a theme related issue
2./ Update your site to the latest WP version………I notice you wrote that you are still using WP 5.9.3 – however the latest version is 6.0. Sometimes older versions of WP can have problems with plugins that have been updated to work with the latest version of WP.
3./ It’s a long shot but: Check that your PHP version on your hosting account is adequate – old php won’t work well with the latest version of Elementor (so you’ll probably need tt to be at least version 7.3….). You should be able to do this yourself without asking your hosting service – look for the “PHP Version” icon on your cPanel dashboard.
Other than that I can’t think of anything else, but perhaps Elementor support can suggest more things to try.
Good luck, hope you get it fixed soon,
regards Karen