I concur with the opinion offered by VincentL. I have exactly the same situation, with a signed vehicle purchase agreement, with a blank VIN BUT I also did have an order number to tie it to a specific vehicle.
Unfortunately, TT Premier has a wrinkle, in that it wants me to change the in service date to be 8/15/2022 - even though it asks the binding contract question. I believe that to be incorrect, and will start a thread on that issue.
NOTE, however, that one MUST ALSO have taken delivery of the vehicle before 1/1/2023 for this to apply.
