Thanks Nick - I looked at the process to manually install older software and it looks quite complex and I wonder if it will create more problems. The good thing is that i've got everything backed up at home so patience might be a virtue and it could be better to wait until I get home and bring back the music files and focus on Roon. Unless someone has a bright idea.

#1 QNAP TS-473, 210 streamer, 218 zone controller.
#2 QNAP TS-251, MS200.
[In Reserve] C15 and MC200.