Posts lose elementor formatting after being expoted

Hi. I have a problem where i can successfully export posts created with elementor into a xml file, but importing them into my own site causes it to lose all formatting and elementor features.

I was able to do this export/import process with no problems until a few days ago. Also ive noticed the problem only occurs when importing the files into my own site. The posts show up fine if imported into any other wordpress site.

What do you think is causing the imports to fail on my own site? Just to be clear i have already tried the following.

-deactivating all plugins (apart from elementor).
-changing theme to nineteen sixteen.
-deleting and re-installing the elementor plugin.
-editing wp-debug in wp-config.php but could not find item to edit.
-wordpress and elementor are on latest versions.

here is a screenshot showing how some parts of elementor are missing from the dashboard: https://imgur.com/9HTecIP. The example page i referenced here is missing buttons where ‘next episode’ and ‘episode list’ are. But on other pages the lack of elementor causes more serious problems.

Many thanks

system info: https://pastebin.com/pgFy4pMt

The page I need help with: [log in to see the link]