RFID 8500 Example not working


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I have downloaded RFID SDK for RFD8500 reader from below url
https://www.zebra.com/us/en/support-downloads/software/developer-tools/…

however the sample code is not woking not able to find reader
readers.GetAvailableRFIDReaderList(); always return empty list so not able to connect with the reader

Mobile Device
Redmi Note 11
Android 11.

Also is there any way to connect device with bluetooth address instead of searching for all available devices.