Just saying - something similar is happening to me. Whereever I update, I either lose contact to my data or, what’s evil - part of the content online disappeared. 16GB.
The last version of everything is on my iMac (Ventura) and a backup, mobile phone (Android), Macbook Pro (Catalina), tablet (Android) - I lost them one by one over the last month or so.
I cannot provide details as I went along, hoping to find a solution by reinstalling, then the next device lost contact, and now part of my online content went missing. What is going on???