So you do you do have BIS 2.5 enabled, or you wouldn't see the choice to Get Images.

Completely delete ALL your email-related Service Books at Options > Advanced > Service Books. Delete any with the @.

Pull the battery and reboot the phone. Confirm those SBs are gone in the options.

Go to your BIS account and resend the service books fresh. You will get the registration message in your messages.

Now what happens?