Update on my end: I received an email response this morning from
payments@intelli-shop.com
They stated that my shop had been marked as "not approved for pay," though there had been no indication of this to me or on my shop log. They suggested I contact my scheduler for further questions. I did so and got a response within two hours.... Apparently, my shop had been marked "not approved" in error. This has now been remedied and I will be paid for it on my next statement. (I was fine with this as it is a relatively small amount - more of an annoyance than anything.)
Had I not caught it, I would likely have never seen the money. It's just one more reason to keep records and watch payments carefully.
Hard work builds character and homework is good for your soul.