Hello @Deene_Dafoe — Thanks for your report, your feedback is appreciated!
I tried to add this station myself and received the same message as you. It seems that the stream from TuneIn for this particular station will not work in Roon. There are some streams that are designed only to work in TuneIn and cannot be accessed elsewhere. While I know you said that it worked for you before, the stream may have been updated to change this.
I tried looking for another link on the station’s website, but it does not appear that they have this information available there. My next recommendation would be to contact the station directly and see if they have a stream URL available to use. If so, you should be able to place that URL into Roon and be back to enjoying your station.