Website: Potential final fix
30-12-2022After asking for help to customer support many times, we finally found the problem that kept locking up the site.
Apparently in a folder out of my reach about 200k temporary files had been generated over time, making my site reach the order limit. These will soon be removed, and the site will definitely stop breaking.
I didn't have any notices of this happening again in the last few days, but I'm so relieved to finally put an end to this. Again, thank you all so much for your patience.