It is a refundable authorization, placed about two days before your kit ships — the same mechanism a rental car counter uses. It is not a charge, and it is not the $100 that reserved your date: that money went toward your booking, this is only held.
It appears as pending on your statement. No money moves. It releases at your return's first carrier scan.
We capture against it only for loss, damage beyond ordinary wear, or unpaid late fees — and we tell you the amount and the reason first.
Didn't solve it? Text (914) 825-5498. If it's your event night, lead with that — those go to the front of the queue.