It seems that a handful of users are having a problem getting Optic On The Go working using Safari on a Mac.
The problem I was having was that every time I went to watch a channel, I would get the message that I needed Silverlight even though I had already it installed. After many attempts I finally found the solution that continues to work for me. I am on the latest MacOS Sierra.
If you already have Silverlight installed - Open Safari and Navigate to the Optik On The Go website. https://onthego.telus.com
Log into your account and attempt to watch any channel, you will get the same error.
Then, in the main menu bar, go to the "Safari" dropdown menu and select - "Preferences"
The choose "Security"
Beside "Internet Plug-ins" - click the button "Plug-in Settings"
Find and highlight "Silverlight"
On the right you will see "Currently Open Websites". Beside onthego.telus.com change the dropdown option to "On"
Click "Done" and you should be good to go.
It worked of me, I hope that works for you all as well.
I'm off to deal with it myself, following your instructions!
EDIT: OK that took less than 2 minutes! Thanks again for sharing your solution!
So far Safari has not been cooperating following the above steps. I had the same issue when testing with my windows pc with silverlight. That was solved by downloading a version of firefox 52 that still supported silverlight. This solution worked fine for windows, but hasn't worked yet for mac. I've seen solutions suggest getting 32 bit silverlight. Going to test that out for the older version of firefox and then return with results