WiFi routers have a region/country lock in them for the WiFi channels and transmission power. It's potentially illegal to use one locked to the wrong country, as it may broadcast on prohibited frequencies. Generally, only buy them from normal retail channels in your country or region (e.g. they are normally the same config for all of the EU), and avoid grey imports. The wrong country code can also block you from using all of the channels which are open for use in your country, or limit the radio power on some channels.
It used to be a configurable option, but the regulators have forced it to be locked on retail routers.
Edit: Both routers are quite similar, so it really depends on what your specific needs are. The AXE has 6GHz (WiFi 6E), the AX Pro doesn't. Check the Ethernet ports on each as well, I think there's a slightly different set of ports between them. There's not going to be a lot of difference between them for Internet performance if you're on 1G or slower Internet.
