The DR6 mobile device has a utility to apply updates for the Android Operating System. If your DR6 came with an RFID trigger (model RG768) and is having trouble connecting that device, this update should alleviate that issue.

Under Settings


open System


then System Update Center


It will check for an update, and if one is available it will present the details and a DOWNLOAD AND INSTALL button will appear:
 Tap that button to allow the download to commence. It will automatically restart the device once the process is completed.

Once complete, it should show RAYA_V05.02.01_20230721
(or higher version/later date)