Yes, your assumption is correct.
Your "Jörg" and the name starts with "W" should belong on the "Ad" (Name) field (seperated with a space of course) and "Mittag" should belong on the "Soyad" (Surname) field.
Here an example of an e-Visa which is probably the same as with the normal visa application.
The Mobile Passport App site states on its FAQ page that Canadians can use it to enter in B1 or B2 status.
The Mobile Passport app may be used by U.S. citizens with a valid U.S. passport and Canadian citizens with both a valid Canadian passport and B1 or B2 visa status.
The CBP web site only says "Canadian visitors," which is probably crystal clear to a ...
This is also verified by an email with the CBP info centre:
U.S. citizens and Canadian visitors can use Mobile Passport Control. Travelers must have a smart phone that can connect to the Internet or mobile network.. As a TN visa holder you are not considered a visitor and therefore you cannot use the CBP Mobile Passport Control app.
No you can’t use the ...