I have a similar problem. I cannot connect to my Pandora account on one of my Marantz receivers. I have TWO Marantz 1504 receivers, as well as an SR7010, a Denon AVR 3312CI, and a Denon AVR 4000. On ONE of the Marantz 1504 receivers, I can connect to Pandora. On the other one, I cannot. I have the same situation with the Denon AVR 3312CI. I am presented with the page asking if I am new to Pandora or if I have an existing account. Selecting the “have an existing account” and attempting to log in goes nowhere, and I’m re-presented with the former page asking if I am new to Pandora or if I have an existing account. I have deleted all data on the receivers and totally reset them to factory default settings. I have re-started the router and the receivers, but nothing allows me to log in to my Pandora account from either of these receivers.
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