Now when selecting Country segmentation in Charts - by your documentation you separating users by AppStore country of user.

Need to add Segmentation by User IP country, it is very important, because by another services (3rd party subscription analytics) statistics is very differs on this 2 segmentations.

This is very important to segment users by IP, because when purchasing Ads for app - costs for ads (user acquisition) is very different for each country, and it detects via IP.

This will not a problem for you, because by your documentation you already detecting users country by IP, when AppStore country not available.

I suggesting make 2 different options "Store Country" and "Country by IP" instead one "Country"