The key is typically purchased through the official ADB AppControl website (often via services like Boosty or direct payment gateways). Once the purchase is confirmed, the developer sends the user a unique activation key.

For any difficulties during activation, the developer provides support via the Official Support Page or direct email contact. Extended Version - ADB AppControl

: Saves a list of previously connected IP addresses and devices for faster wireless reconnection. ADB AppControl Purchase & Activation Details