Iframe Geolocation Feature Policy
If you get an alert for "Geolocation has been disabled in this document by Feature Policy." chances are you are using an iframe that contains a page using geolocation features. To enable the geolocation feature of your page, create a custom page in the myapppresser.com customizer and place your iframe tag there along with the allow="geolocation" parameter. The whole iframe tag will look like this:
<iframe id="ap3-iframe" src="https://example.com/your-geo-page/?appp=3" allow="geolocation"></iframe>
More detailed information on feature policies are here.