Power Drop Shipper

I recently made another thread on here, but I just found in the last minute a notice on the door from the shipping company (TNT, but the shipper is UPS I see) and it said they will re-deliver on Monday, since I didn’t sign for it on Friday. They said “In person signature is required”, and “Adult signature required (minmum 21 years of age).

Uh oh, I am 17 years old, what am I supposed to do? My Dad isn’t here, I don’t really want my mom knowing I ordered something, so I’m in a pickle here. Will they ask for identification? Will they refuse to give the package to me? Can my mom sign? What do I do?! Thanks.