Hey jayne,
Thank you for reaching out! That is certainly odd, I gave it a test on our BlueSky TV equipment here and the Stingray music channels show up in the "Free to me" guide menu. You can always use the voice control by stating "Stingray Hitlist" to go to the first Stingray channel (700). To fix the issue, I will recommend rebooting your BlueSky TV equipment, please follow the steps here to do that. If you continue to experience the same issue, your best bet is to touch base with technical support for further assistance.
Cheers,
Tony | Community Mod.