Hi there, @Josereyes. 👋
The Device Activation tab is for activating your Pandora account on in-home devices such as Smart TVs, Blu-ray players, etc. These devices generate codes that need to be entered on a separate device for activation. If you're attempting to activate Pandora on your mobile device, you already have simply by signing into the app with your Pandora account email address and password.
First, I would recommend trying out the standard troubleshooting steps to see if this helps out with that error message. You can find those steps here: iOS Troubleshooting
If the issue persists, I would like to report this issue to our engineers.
Could you tell me more about your device?
Device & Generation: (e.g. iPhone X, iPad Air (3rd gen), etc.)
iOS version: (Settings > General > About > Version)
Pandora version: (Pandora > Profile tab > Settings gear & scroll to the bottom of the screen)
Are you connected to Wi-Fi or cellular data when this is happening?
Let me know how it goes. 🎧
... View more