If you go to the old Optik on the Go link on your computer - https://onthego.telus.com/ it still gives you the Silverlight plugin error, but the new link - https://watchoptik.telus.com works great.
For more information on how to set it up is available at Telus.com - https://www.telus.com/en/ab/support/article/optik-tv-app-explained
Thanks for sharing!
Noticed today there was a new Optik app on my iPad as well.
The new watch optik website doesn't seem to work on FireFox 57.0.1 however the website does work on Internet Explorer, Edge & Chrome on WIndows 10.
Thank you very much for this useful info. It has been a struggle with silverlight for the last year or more.