Hi
If you ever encounter this issue on a version pre 5.0 please contact support who would be able restore your SCI to working and should see stats in, this is important as it would lose the data that is coming from vSZ/SZ and would not be able to recover this data in future. In post 5.0 there is an auto recover function in place so you would not encounter this issue.
Regards,
Abilash PR.