Paid for cloud backup, no way to get it

I had to wipe my Iphone and do reinstall so I decided to pay for the in-app cloud backup option. When I reinstalled the app could find no way to get my data back. When I tried “restore purchases,” got an error message. Zero way to get tech support. What a scam.

Sushiboy21 about Secret Apps Photo Vault, v3.4.3