It looks like the aWHMCS Android application does not offer any type of security what so ever. Once someone get's a hold of your phone, which can happen not only when it's stolen of course, they can just open the aWHMCS app and get access to everything.
Support tickets, client data, revenue, etc.
I would like to request that aWHMCS get's a option where you can define a 4 to 5 digit code to protect the app during start-up, so that instead of directly connecting to your installation(s), you first have to type in your code before the app even starts up at all.
This can be set on the Settings page on the home screen.