New construction address issues

Recently moved into new construction. I am the second house completed. Having issues with USPS and the DMV recognizing the address. We have gone to the post office who sent us to town hall.

The USPS mail forwarding website is finally showing the address in the auto completion but then I get an error message that says the address is not found.

The DMV address change website auto completes the last 4 of the zip code but then also says to enter a valid address.

Any insight into how I can setup mail forwarding and update with the DMV would be appreciated.