Restore HA

Back from holiday I had a bad surprise, HA does bot start aymore. PC was off for 3 weeks and now at the restart everithing is working fine but HA is not working.
I have Virtual Box on Win10 PC, Haos_ova.vdi, at the start the PC is loading all file but I have a crash and a screen with Mapping Table BLK o-1 ecc and Shell_
I have the snapshot created but all are .sav, I reinstalled HA on a new virtual machin ad now I can chose to restore rom backup but it does not accept .sav file, asking for Tar file that I do not have.
And I cannot loging with my user and HA asking to create a new account.
Please someone can help? Many thanks