If you log into to an iCertifi and it wont unlock the app using your account details password here is a quick fix.The account/log in feature simply tells your devices on your iTunes account you are a subscribed user. Your subscription will not be affected
On any device you have purchased or have an active iCertifi subscription, create a new account.
- Select the subscribe tab > log out
- Log in > create new account. Use a different email address for the new account, you can re use your old password if you like.
- Log in to the relevant iCertifi app with your new email and password details and it should unlock instantly.