Are the devices suspended or conflicting? Go to RME > Devices > Device Management > Suspended Devices and Conflicting Devices, and see if the devices are listed there. For Suspended Devices, resume them. For Conflicting Devices, you will need to adjust the DCR device type to match the actual device type being managed. It is recommended to leave the DCR device type as Unknown so that the applications can figure out what type of device it is.