Login does not work correctly. You can sign into your account but your digital cards do not load. Its a big pain in the rear to figure out your login. Even the instructions in the email reference a username, but there is only an email to sign in with. It appears Padi has a poorly run login infrastructure and with moving and merging records - this makes the app worthless. If you could screw up an app this badly and have it still in the App Store, obviously Apple has some review issues.
Suggestions:
1. Pay a firm to build your app (a reputable one).
2. Clearly explain which login should be used, if need be build a page on the Padi.com site and explain how to transition to the SSO login credentials. This is really confusing, I can only imagine how non technical folks are doing.
3. Padi eCards should be viewable in the browser and in the app. You need to be able to access it when your crappy app fails.
4. Build a new app - correctly this time.
Kguy18 about PADI - Scuba Diving Essentials