Hey @MattFusion
Amplitude is an event based analytics platform, and all charts and cohorts query at the event level. Charts will return the property value at the time of an event.
Here are some good posts which explain this behavior in detail
https://community.amplitude.com/instrumentation-and-data-management-57/why-am-i-seeing-none-values-in-my-chart-results-184https://help.amplitude.com/hc/en-us/articles/360016257391
In short, the most probable reason you might be seeing none values in the profile.country property is that at the time of your User Signed Up event, some users failed to get this property. And then at a later event, this property got updated for the user.
You can check this user’s first sign up event , look up the raw json for this event and verify if the profile.country was set or not for the event .
Hope this helps.