Bluetooth (in)security on AC180

My Bluetti AC180 does not require confirmation when the Bluetti APP connects to it via Bluetooth, allowing unknown and/or unauthorized nearby third parties to monitor and control it.

I find this lack of control incompatible with some of my use cases, such as that of UPS. I reported it to Bluetti support but they did seem to acknowledge the issue.

Please does anyone know if on the AC180 it is possible to disable Bluetooth, either via software or hardware, without voiding the warranty?