A Microsoft file hosting and synchronization service.
Hello,
Do you see your files in OneDrive web using a different browser or InPrivate window?
Sign in at onedrive.live.com and confirm the correct account. Check Recycle bin and Second-stage recycle bin. Clear browser cache or use Edge, then try Restore again. If still blank, unlink and sign in again in OneDrive settings on your PC to refresh sync. Also check Storage in settings to confirm the account is not over limit.