Hi yreed. No, I've never encountered that problem. I'm assuming it has something to do with your specific brokerage.
Your best bet would be to log onto your account and send them a quick message to find out the reason... Some online brokerages have 'Chat' options so you can speak to someone immediately...
Or you could do it the old-fashioned way and actually call them. :-)
I use Etrade for any penny stock trades and I've never really had any problems.
Sorry I couldn't help you more... Saw your post so I figured I'd respond.
Best of luck yreed, NYCrew
PS: Now might be the best time to contact them because it's late and they're probably not busy.