Parker, no one needs a tunein account to play tunein stations on an Alexa device, even though some other services on Alexa devices require one. I actually wish it did require a tunein account like the FireTV does, that way I could see my list of tunein stations. On Alexa device, one needs only to say "play tunein station blah, blah" and it plays. Stations playing can be added to a Favorites list in the Alexa app so they can be returned to at anytime..
@madmanuel
What you are experiencing is normal operation. Alexa cannot tell what music is playing if you ask it, although if station display trach title, it can be seen in the Bow Playing of Alexa app.