[Snapshot Pro] Cannot Restore Snapshot

My site on my network lost all pages except homepage. I'm not sure when or how this happened.

So, I am trying to restore it using snapshot.

I have tried multiple times with different snapshot versions on two different networks with new sites.

None of them work. I receive this message "An unknown response returned from Snapshot backup attempt. Aborting. Double check Snapshot settings."

I already did a plugin/theme conflict test.