I don't think it's you, I think it's just buggy, and, oddly enough, the V Collection instruments don't seem to work very well with the BSP in stand alone.
I just tried syncing up Modular V and Mini V. I set Modular up to receive midi from channel 1, and Mini to receive on channel 2. Mini seemed to work okay, but modular wouldn't receive midi when I had the sequencer running (BSP in INT mode), unless I set the midi input to all.
So, midi input set to channel 1, doesn't receive midi from the sequencer on channel 1. Midi input set to all, receives midi from the sequencer on all three channels. Weird.
With the sequencer turned off I could play notes on the pads, but releasing the pad doesn't always send a note off message, so most of the time the key press gets stuck. The same thing happened when I tried ARP.
Spark, I managed to get set up in slave mode, but I couldn't find anyway to set which channel I wanted to send midi on.
I don't have these issues when running the instruments from inside a DAW. Well, I can't speak to Spark because I haven't had much interest in it, but the other instruments run as I'd expect when used as plugins.
As an aside, I bought the V Collection during that sale, around Christmas. I figured at the price point I couldn't really go wrong but, honestly, I regret the purchase. If I could go back I definitely would not have bought it.