@Bridgetteashley That's because they haven't created their new Pandora accounts yet.
To create a new account from a computer:
Go to pandora.com.
Click Sign Up in the upper right corner.
Enter the required registration information (be sure to enter your birth year and not your entire birth date).
Review the Terms of Use and Privacy Policy.
Click Sign Up.
To create a new account from a mobile device:
After installing and launching the Pandora app, select Sign Up. Then fill out the following registration information:
Enter the email address you would like to use.
Enter a password.
Tap Continue to move to the next screen.
Enter the required registration information. If you're using an Android device enter birth year only, (e.g., "1975")
Review the Terms of Use and Privacy Policy.
Tap Finish to complete.
Let me know if they run into any other issues accepting the invitations after their new accounts are created.
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