Funny, I used to do DoorDash, and sometimes people at the military base would order. Google maps did NOT know where it was, and I assumed it was kept off of Google maps for security reasons.
If you submit the change on Google Maps, you won't hear back, but in a few weeks/months, the change will just happen. I had to add my house to Google maps because it was new construction, and my address kept taking people to the other side of the freeway when the put it in. I did it proactively before the house was actually completed, so I only had one package not make it to my house.