I have already tried to remount the network storage and created a new share on my NAS. But unfortunately all without success. It seems that somehow only the “Backup” type is affected. “Medien” I can add.
Same issue. I just erase all file in the mount directory on my HA.
I use this share for Frigate media on my Synology. I think frigate write in and it was not already mounted after a HA upgrate.