You are located in Slovakia? The backend probably blocked you because of your location. I just updated that for you.
This is more complex than I was hoping. I thought the plugin would make it simple not more complex. Are you able to help fix this if you can get into the admin panel now (should work)? I think you have the right solution but I am not certain how to implement it. Are you able to do it directly from the admin panel?
Let me know if there is an additional charge to fix this.
Thank you!