Hi there,
Thank you for the information. The fact that cleaning the transient brings back the grid shows this is 100% a cache related problem even if it disappears afterward.
Accessing the CF will is not that important at this stage as the most that we can do there is to follow this instruction:
https://xthemetips.com/using-cloudflare-rocket-loader-with-x-pro-and-x5/928/
I suggest that at this stage you consider the staging website and also temporarily first purge all the caches from the plugins you have, then deactivate them. After that set the CF to development mode:
https://www.fastcomet.com/tutorials/cloudflare/development-mode
Then use the Transient Cleaner tool. Check the result.
Thank you.