Non tradable Stock can't liquidate

I have a stock that was purchased in the paper account - HZAC. It is no longer tradable. I can’t liquidate it via the web interface. I have to tried to place sell orders, I’ve to click the X on the overview page. If tried liquidating from the positions page. All attempts fail and say its not tradable. I don’t want to sell it, I just want it out of my account. It is crashing my bot, which sees it and constantly tries to sell it, but I can’t get rid of it.

Looks like there was a corporate action a few months ago. We will need to update on paper. We are going to put more effort into processing these actions in paper going forward. We will update on Monday. The new symbol is SEAT and it was 1 for 1.