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.