Doesnt Work; No Support

Expense calculator does not work. Same complaint Im seeing in other reviews.
Will not sign me in. I get an error message repeatedly. But, I am able to sign in on car2go site with same sign in information (go figure).
No support. When I try the link for support I get a blank page with an error message.
Conceptually a great app, if it would work, but it does not. All in all a frustrating experience.

Thomas Bakker about car2go App PRO, v4.2.1