Unable to pair DS2278 manually via latest Android SDK v2.6.10.0

MainApplication.kt

class MainApplication : Application() {

    override fun onCreate() {
        // Initialize zebra scanner
        val sdkHandler = SDKHandler(this)
        ZebraScanner(sdkHandler)
    }
    
    // rest of the code ..
}

ZebraScanner.kt

package com.myorg.myapp.scanners

import android.util.Log
import com.zebra.scannercontrol.*
import com.zebra.scannercontrol.DCSSDKDefs
import kotlinx.coroutines.*

// Note: - `sdkHandler` is initialized & passed from MainApplication

class ZebraScanner(private val sdkHandler: SDKHandler) : IDcsSdkApiDelegate {
    private val scannerInfoList = mutableListOf<DCSScannerInfo>()

    init {
        sdkHandler.dcssdkSetDelegate(this)
        sdkHandler.dcssdkSetOperationalMode(DCSSDKDefs.DCSSDK_MODE.DCSSDK_OPMODE_BT_NORMAL)

        var notificationsMask = 0
        // subscribe to all scanner availability events
        notificationsMask = notificationsMask or (DCSSDKDefs.DCSSDK_EVENT.DCSSDK_EVENT_SCANNER_APPEARANCE.value or
                DCSSDKDefs.DCSSDK_EVENT.DCSSDK_EVENT_SCANNER_DISAPPEARANCE.value)
        // subscribe to all scanner connection events
        notificationsMask = notificationsMask or (DCSSDKDefs.DCSSDK_EVENT.DCSSDK_EVENT_SESSION_ESTABLISHMENT.value or
                DCSSDKDefs.DCSSDK_EVENT.DCSSDK_EVENT_SESSION_TERMINATION.value)
        // subscribe to all barcode events
        notificationsMask = notificationsMask or DCSSDKDefs.DCSSDK_EVENT.DCSSDK_EVENT_BARCODE.value
        sdkHandler.dcssdkSubsribeForEvents(notificationsMask)
        sdkHandler.dcssdkEnableAvailableScannersDetection(true)
        sdkHandler.dcssdkGetAvailableScannersList(scannerInfoList)
        sdkHandler.dcssdkGetActiveScannersList(scannerInfoList)
    }

    private fun connectToScanner(id: Int) {
        CoroutineScope(Dispatchers.Default).launch {
            val result = sdkHandler.dcssdkEstablishCommunicationSession(id)
            Log.d("ZebraScanner", "Scanner connection result: ${result.name}")
        }
    }

    // --------------------------
    // -- All delegate methods -- 
    // --------------------------
    override fun dcssdkEventScannerAppeared(scannerInfo: DCSScannerInfo?) {
        val scannerName = scannerInfo?.scannerName
        val scannerId = scannerInfo?.scannerID
      
        Log.d("ZebraScanner", "Scanner appeared: name=$scannerName id=$scannerId")
        
        if (scannerId != null) {
            Log.d("ZebraScanner", "Connecting to $scannerName...")
            connectToScanner(scannerId)
        }
    }

    override fun dcssdkEventScannerDisappeared(id: Int) {
        Log.d("ZebraScanner", "Scanner disappeared: $id")
    }

    override fun dcssdkEventCommunicationSessionEstablished(scannerInfo: DCSScannerInfo?) {
        Log.d("ZebraScanner", "Scanner communication session established: $scannerInfo")
    }

    override fun dcssdkEventCommunicationSessionTerminated(id: Int) {
        Log.d("ZebraScanner", "Scanner communication session terminated: $id")
    }

    override fun dcssdkEventBarcode(barcodeData: ByteArray?, barcodeType: Int, scannerId: Int) {
        Log.d("ZebraScanner", "Received barcode: ${barcodeData.toString()}")
    }

    override fun dcssdkEventImage(imageData: ByteArray?, id: Int) {
        Log.d("ZebraScanner", "Received image: $imageData from $id")
    }

    override fun dcssdkEventVideo(videoData: ByteArray?, id: Int) {
        Log.d("ZebraScanner", "Received video: $videoData from $id")
    }

    override fun dcssdkEventBinaryData(binaryData: ByteArray?, id: Int) {
        Log.d("ZebraScanner", "Received binary: $binaryData from $id")
    }

    override fun dcssdkEventFirmwareUpdate(event: FirmwareUpdateEvent?) {
        Log.d("ZebraScanner", "Firmware update: $event from ${event?.status}")
    }

    override fun dcssdkEventAuxScannerAppeared(scannerInfo1: DCSScannerInfo?, scannerInfo2: DCSScannerInfo?) {
        Log.d("ZebraScanner", "Aux Scanner appeared: $scannerInfo1 & $scannerInfo2")
    }
}