Connect the M5 via Bluetooth only through your Morpheus app by way of TEST, TRAIN, or SYNC.

There is both a temporary and permanent solution to this issue.
Temporary Solution:
- Hold the side button for about 10 seconds.
- Let go of the side button.
- Then sync the M5 to the app by pressing SYNC in the app.
This will break the Bluetooth connection and will temporarily allow you to connect to the Morpheus app - to complete the recovery test, for example.
Permanent Solution:
If it is your phone that the M5 is connected to directly, you will need go into the Bluetooth settings of your phone to "forget device" or otherwise remove that connection.
After you disconnect this, turn your phone's Bluetooth off and then back on again to ensure that it stays disconnected.
If it is not your phone that is connected to your M5, then you will need to find whatever the M5 is connected to and remove that connection. And make sure that it does not get paired or connected directly to a phone or other device's Bluetooth settings again. The M5 will not automatically connect with any device because Bluetooth connections of this nature have to be confirmed by a person.