Check your widgets tab. Might be in there. Also go to the app in the play store and read reviews from your device type only. Maybe some others have the same problem
Make sure that you have disconnected the JamBox from all your other devices before pairing.
You have to tell most Apple products to "forget this device", may be the same on Androids.
Had the same problem with FoxLII, BT headphones, and a generic chinese BT box.