Billing Address Field – CardNav Review

Just dumb - Billing Address field is a single edit box - no formatting between street address, city, or state - I guess I forgot a comma (,) between city and state and 2 attempts to submit the CORRECT address and get a message saying my registration has been suspended for 30 minutes. I still do not know what the problem is - assume I'll try 2 more times in 30 minutes and get blocked again. I've spent years designing user interfaces and when I see poor quality like this it really makes me think twice about trusting this service with my credit card info; Hopefully they're not using self-signed certificates for the secure comms between their service endpoints.
Review by MurrietaRob on CardNav.