How could I add a "Forgot password" feature in the mobile sign-in screen? As far as I can see I cannot use the Deeplinks or edit some html file in order to customize the look. Any suggestions would be breatly appreciated.
Except for the styling, the default login screen can not be customized. Have a look at the Mobile Login widget in the App Store. With this widget, any form can be used as a login screen. Just add a microflow button to provide a "forgot password" feature.