fwiw, I used Kopia for around a year, but eventually the backup got corrupted with a BLOB not found error and there was no way to fix it.

similar to this issue, except that nothing would fix or improve the situation github.com/kopia/kopia/issues/1087

and because it seemed to be an issue with the repo (not just with a snapshot), the remote copy was also borked.

I’ve since migrated to Rustic