How are the user accounts for logging on to the RadioPro Mobile app administered (i.e. created, deleted, password reset)?

This is controlled or monitored by the admin on the IP Gateway through the ICU.exe utility. This utility is used to configure static IP address, as well as User Names and Passwords for the Mobile app users. User Names and Passwords may be created and deleted using this utility.

See the RadioPro IP Gateway Installation Guide page 16 “Solo/Talk Mobile Clients”.