Server Move
This was a lateral move with the same provider, but still the database was physically moved. If you commented over the last 24-48 hours and your comment is missing, it was most likely due to the move.
If you are seeing this, you can go ahead and comment and your comment will not be lost.
I note that I am now accessing Threads on the new server, so I’ll be going ahead with posts today. Some won’t see them until later.