Debug does not work

Hi,
I can’t get the plugin’s debug to work properly. It display the base price, in every situation.
My first thought was that the plugin was not working but when I used a VPN I did see that the prices were changing, it’s just the debugger that is not.

When I insert an IP (France, Spain, Romania…) it report the right country on the right, but then the frontend price won’t change. Is there a way to fix this? Test all the multiple countries is very hard without free reliable VPNs around the world.

Thank you.

https://wordpress.org/plugins/woocommerce-product-price-based-on-countries/