Arrive Can "port of entry" for Princess Seattle to Vancouver ground shuttle?

[GottaLuvCruising]

Trying to complete ArriveCan for Saturday.  App appears to want me to identify WHERE shuttle will cross the border?  Seriously?  Any ideas?  

Douglas (840) appears to be the best I-5 option.  But I don't know if it's correct and can't seem to select it.  PITA.

I'll call Princess later, if I must...

Edited July 6, 2022 by GottaLuvCruising

[GottaLuvCruising]

Looks like Pacific Coast highway.  Able to move forward now...