@aadabifard Could you confirm that you are logged into your upgraded account on your device
Sometimes, it may help to sign out of Pandora, and then sign back in using the email address associated with your upgraded account.
If you are still seeing ads after confirming you are logged in with the correct address, can you tell me a bit more about the advertising you are seeing?
Is it for a specific brand or artist? Are you hearing them while listening to podcasts?
Let me know.