MTS TV is advertising a free preview of Series+ on channel 422 from August 29th to September 30th, 2016.. but I'm seeing this channel currently reading 'Content unavailable', even though it's in the guide. I guess MTS forgot to make the channel available for the free preview.
Thanks for the head's up. You are right. That was a miss on our part. It should be fixed now. You *might* have to reboot your box to immediately see the channel working for you. Otherwise, the next daily refresh will update all STBs.