OP-1 Stuck Key

I bought my op-1 about a month ago, the middle C key is not responsive and is alway sending a signal when not pressed down. I am really disappointed and I just passed the amazon return policy that was three days ago.
Any suggestions? Has anyone had and solved this problem?

Did you resolve this? I’ve seen that removing the key gently and putting it back in can solve these kind of issues.

no I just ended up returning it and got a different synth.