That is a very vague reply in typical Access fashion.. Sounds like they don't wanna bring up that you probably have a defective unit that needs to be replaced within warranty.
I also have a TI2 Desktop and I have the USB cable plugged in at all times.. I also use Logic and I never have the problem you describe.
Maybe it's your Mac but I doubt it.. To rule this out I'd suggest trying it on another PC or Mac, see if the problem persists.
yeah, it’s strange, and I agree, it does seem that they don’t want me to return it, though, I bought it from MusicStore, so I assume that’s not their issue.
I also thought it might be my MIDI keyboard (Impulse), or my Audio Interface (Scarlett), but it could be a lot of things, I can almost certainly exclude those.
The audition button does produce a sound, so that makes me doubt especially.
Another reply from them
"The moment a Virus TI unit is connected to a computer via USB, its Midi ports act like a Midi interface, so the Midi in port would not send Midi signals to the TI's sound engine. That is actually by design and you need to unplug the USB cable to be able to use it like a regular hardware synth."
I also found this:
Among other, actually quite a lot, USB related threads.
Some sent their unit back but had the same problems with the new one.
I want to make really sure first, but that reply from them just seems lazy.
I have a new MacBook, but I have to buy some USB adaptors first, I’ll test it out then.
But with Catalina installed. So that’s probably another source of frustration I rather not have right now. It’s a difficult year.
Thanks again for your input.