Frustrated

Just picked this up recently, not 100% sure about it yet. Presets sound fantastic. Lots of modulation possibilities. Basic sequencer functions are what I'm struggling with. Yes, I am RTFM. So much of it is explaining the oscillator types and how you might use the LFO & envelopes to modulate the sound. & I've watched some demos. I turn on the sequencer, record the steps, rests, ties etc. I can't get it to play back. Press play, nothing. Press a key, nothing. Press Seq A, Seq B, nothing. Everything Ive read in the manual and seen on demos says after you enter all the steps it's as simple as pressing a button, so they gloss right over it. Is there something I'm missing?