Yes, I understand that 21+10 does not complete all of our orders. I have reached out to krikzz for clarification, and I'll update the thread on the situation when I hear back from him. For transparency, the tracking numbers so far are:
RC400371965UA and RC400371807UA
The reason why I am assuming the second order contains 10 units, is because in the krikzz store interface, the tracking number listed is "RC400371807UA(10)"
Today a "delivery attempt" was made for the first shipment. Even though I was home, no one rang the door bell, but they will be waiting for me at the post office, and I will pick them up Monday morning, then packing and shipping out USPS Priority units 1-21 on Tuesday, so the first 21 should arrive by Thursday (8/11).