The authentication process is the following:

1. Check if site exists. We see if we need to use http or https in here.
2. Check if the app should use local_mobile.
3. (User inputs credentials).
4. Try to get user token. If this call returns 'requirecorrectaccess', we add 'www' to the URL and try again.

The problem is that the local_mobile check also returns 'requirecorrectaccess' if we should use 'www', so the user won't use local_mobile unless he manually inputs those 'www'.