I have an android TV box which i don't know the manufacture as it is a rented device for the streaming company

So the manufacture of the device removed the option to manually connect to a BT device, and the device has to manually connect to the box automatically which almost never happens. so to pair them i have to unpair them and pair them like a new device. this is so annoying. I didn't find any app that have a good BT interface to pair devices.

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Please Help