There are two issues here:
- If you requested /e/ to add an app, then If they ever get round to it, it will be in the Apps store, not in Aurora Store
- Every app that is available in Google’s play store is already available in Aurora Store. However some app are ‘geo-restricted’ (i.e. only available in specific countries). To access those apps in Aurora Store there are couple of hoops you need to jump through. See this post for details
You may also need to change the System Language in your phone to match the selected locale