Hi Rfilipo.
We've attempted to use the application in our office and we've been able to listen to the stations and navigate around the application but have had trouble with using the 'Back' button on the remote whilst in the application on a radio station.
Does this issue happen after they've been on the app for an extended length of time?
It might be worth contacting Radio Online to see if they've been made aware of this issue and are in the process of fixing it.
David_Bn