I didn't think UDI helped with isy issues anymore. I know they went to paid support for that platform but not sure if that's still the case or not. Just looking at the frequency of tickets, they may be looking at you needing paid support vs the normal free support lines. If that's so, I would think they should respond to you, and letting you know that.
I dont use UD devices anymore but I thought you just needed to go to the configuration tab and choose upgrade packages? I may be incorrect about the exact name since its been a couple of years.