Thank you for reporting this.
I did find some loopholes where a store owner could change some variables and change the name, description of a different restaurant. I have fixed it now.
If you are using Foodomaa v2.8.2 kindly download the RestaurantOwnerController.php
from the link below and upload it to your server's app/Http/Controllers
directory.
Download Link:
https://drive.google.com/uc?export=download&id=1ZmDpCfXCwxdhY3zt6Zsv22YdVPsYsX2J
The same will be patched in the next release 2.9.0