Sync deletes files & Any way to recover files by batch?

[Theo]

Things happened

Briefly speaking:
I bought Ob-sync →
My computer’s disk broke →
I tried to recover my notes from my Iphone => I set up and sync with a new vault (as I forget the previous password). →
Only a small part of data were successfully synced to the computer => it synced back (from PC to remote) and deleted most of the files in the remoted vault => then sync from remoted vault to iphone and deleted the files in Iphone.

What I can do now:

recover the files one by one from the historical versions…

PS:

I had post this in the “Bug reports” Category also.
Two similar questions before:

• Sync stopped working and then deleted over half my vault - Help - Obsidian Forum more or less the same bug (with no reply)
• Can Obsidian Sync recover your accidentally deleted vault? - Help - Obsidian Forum with the need of a method to recover a whole vault also.