CC autopay not working?

My payment is due today, Sep. 2. I had auto-pay set up a few months ago and it's usually automatically paid on the 30th of every month, which did not happen this time. I'm at work and can't step out to make a call, I tried looking for a live chat service in the meantime and decided to see if anyone here has suggestions.

I'm worried if I manually pay it, it'll suddenly decide to automatically pay it at some point, which means I'll have paid twice. It isn't a big deal but I don't want to worry about keeping an eye on the balances of whatever. Any idea if it's an app issue or something? I checked and my auto-pay is definitely still on, I can't make any changes to it because it's the due date.