I live in the USA and just recently I was told by a student of knowledge from Yemen that we are must face slightly South-East because of the flat map, and that the calculations the mobile apps use makes you face North-East for some reason. Where do I face? What about masjids that are NE for qiblah?

Ustadh AbdulAziz al-Haqqan

I think the people of the country know best and u can see it yourself if u r pointing towards mecca or not.