You can change the registration information in the app any time you like.
EDIT: My Registration tab shows two options: View and Change. "Change" allows you to change to "Myself" or "Myself and another individual" or "Myself and a company" and "Trust". I didn't see any option for changing...
I can't answer the first.
As to the second, the VIN is the reference that the sales advisors could use to get information about a specific vehicle. These messages are suspicious to me because these people are claiming the exact dates their cars would be built/delivered and yet none has...
Thank you for the warning.
The specificity of the dates in those messages seemed too good to be true. I believe, based on my past Tesla experiences, that our next step is to be assigned a VIN.
Also, my experience has been that the SAs know very little about the manufacturing dates.
A...
I have never received a phone call or message to schedule delivery of any of my Tesla cars prior to receiving the VIN.
I am going to assume that the OP did not receive the VIN yet. Therefore, Tesla's calling to rectify their error of having sent multiple invites to one account makes sense.