I guess the Pandora website and the "edit station" procedure have changed since the previous answer because I had the same problem. I think this change came with the new feature called "modes" listed under "Tune Your Station" on the Now Playing page. There is no ellipsis to the right of the play button, at least not any more. Here's what worked for me to edit my stations in January 2022 on a computer with a web browser like Chrome or Firefox. Editing stations on your phone may be different. I have Pandora basic. To edit your stations on a computer: Log in to Pandora. From the Now Playing page, click on My Collection. The link is in the upper left corner. On the My Collection page under Collected, which should be the second section down, the title of each station appears just below the station picture. Click on the title of the station you'd like to edit to go to its "backstage page" shown below. Locate Station Created From just to the right of the station picture. To add a new seed, use the search box just below Station Created From. If the station is a genre station (a Pandora created genre station), these options may not be available. Note: make sure your browser window is maximized or Station Created From and the search box section may be hidden. If your window is maximized and you don't see these options, you're probably trying to edit a genre station which cannot be edited. You can only edit stations you created yourself. The current seeds for the station are located just below the search box. Hover over that seed to reveal an ellipsis. Clicking the ellipsis provides other options like delete to delete an existing seed or share. This worked well for me on all my stations; I don't have any genre stations. Hope it helps.
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