digital noise and save issues of Nvarcher Bluetooth 5.0 DSP with Mvsilicon BP1048B2 chip

Hello.
I bought the bluetooth DSP Blenchance 2.1, when I save my settings the red light does not flash twice, but if it is saved for several minutes/hours, after that period of time it reverts to a completely random setting.

Additionally, it presents digital noise that can be easily perceived at low volume levels.

Does anyone know how I can correct these problems?

I am using ACP Workbench to configure it.
 

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