restoring btrfs snapshoting (not working at all)

I’ve had problem with btrfs snapshots ( really long ago - on old laptop which I only use from time to time ), it consumed too much disk space so I delete all of the snapshots. And then I did single snapshot but there are some errors ( invalid snaphots…) and system dosen’t make any ohter snapshots from that time although I set snapshotin properly via Yast. any suggestions?