Trailing stop not triggering on live account

I have a 15% trailing stop for AMC. The HWM is $3.88 and with a trail of 15%, I’d expect the stop to trigger at $3.29. I queried the list of orders, and Alpaca has the stop trigger limit at $3.30. The stock price is currently $3.12 and has been below $3.30 for about 2 hours now. Yet the trailing stop still hasn’t triggered. This is happening on my live trading account. I see AMC gapped down today to open below $3.30. Could that be what’s causing the bug?
Screen Shot 2020-10-20 at 9.53.36 AM