There are a number of reasons why the Bluetooth connection is disconnecting here are the most common:

1. Interference from other devices within 2.4GHz or 5 GHz band.
   

Such as Microwaves, cameras.LCD displays, WiFi, and other Bluetooth devices.

1. Too many apps open within your device, causing interruptions to service, close down unused apps.
   
2. The distance between the Bluetooth ceiling speaker and device may be over 32 feet/ 10 meters, try moving closer to your speaker.
   
3. Low battery power on your device phone/tablet causing the connection to be unstable
   
4. Try restarting your device Full reboot to clear memory cache built up.