Cannot `docker push` since yesterday

Questions / Help
1

Since yesterday, pushing my image to the registry fails. It looks like this and after a few attempts, ultimately fails:

14:42 $ docker push registry.fly.io/xxx-yyy:1.8.11-tv-1
The push refers to repository [registry.fly.io/xxx-yyy]
81c4b1a326e2: Retrying in 4 seconds 
5f70bf18a086: Retrying in 5 seconds 
e41cf9af80a1: Retrying in 4 seconds 
c5fbf8d2da4a: Retrying in 4 seconds 
429183dc010c: Retrying in 4 seconds 
41797b28a6d0: Waiting 
bc9292d8c35e: Waiting 
433ba33d1189: Waiting 
3d58fff90f77: Waiting 
633f5bf471f7: Waiting

I already did a fly auth login/fly auth docker and systemctl restart docker.service (and even rebooted) but it still fails. (Ah and fly wg reset, too… probably irrelevant…) Any hints?

2

OK, my fault: xxx-yyy must be the name of the (or another valid) app and not the name of a previously destroyed app…