When trying to activate my WiFi controller, I get a "Session Failed" error in the mobile app. What do I do?

This issue typically occurs because the mobile app and the WiFi controller are able to establish a connection, and then it times out, either because they lose signal to one another, or a long period of time elapses. It should be a rare occurrence.
To fix the issue, try closing the SmartLink App. You may need to actually quit the app, not just send it to the background.
1. To fully close the app on iOS, swipe up on your home screen and pause slightly in the middle of the screen for a second. You should see your open apps as "cards", and you can select SmartLink Network and flick it "up" to close.
2. On Android, swipe up from the bottom of the screen, hold, then let go. Find the SmartLink app and swipe up.
Power cycle the controller
Begin the process again.