Signed-in users can also find this guide, with screenshots, under Help in the app.
When two-step verification is on, ParkCommand asks for a code each time you sign in on a new session.
Sign in with your Email and Password as usual.
The page asks you to open your authenticator app. Find the ParkCommand entry and read the 6-digit code.
Type the code in Verification code. The Verify button becomes available once you have typed 6 digits.
Select Verify. Your Dashboard opens.