I have a throwaway email address as well but usually they want street, city, state, and zip to calculate
I have used some of the finished houses in the area for street address and they aren't always recognized by the cart software because they aren't in the USPS system yet since this is a newly developed area
We didn't even get assigned an actual street number until January of 2023 even though we started the process in May of 2022
It took us several months after the sale of the house was recorded for the post office to officially recognize the address
It took even longer for Apple Maps, Google, etc to catch up and have our address in their systems
A lot of businesses subscribe to the official USPS lists and their cart systems would tell me my address was invalid
I actually spoke to one lady on another non detailing matter and she explained that some smaller businesses don't update their address database from the USPS as often as possible because every time they do it costs $ so some only do it every 6 months or so