Elasticsearch Domains not updated after confirmed update process - no info - update now disabled

Same problem: triggered the service update of one domain 11 hours ago, no errors, but domain still shows the old service release, and upgrade is disabled.

I think I have a similar issue too, same update R20211203, from the Notifications I can see that update started on December 27th, and as of January 5th there is no Notification detailing the completion of the update, as I can see on previous updates (there's always a "started" and "completed" event). It describes my current version as R20211203, but the data in my database has been lost prior to December 25th, losing over 14 months of data (gathered from environmental sensors etc.). If I snapshot my data it only goes back as far as December 25th or so. Worst thing is that I am on (expired) free tier, and so have no support...