It has to do with Flash support. Flash is still used as a tool to authorize the video stream and the version on Linux (I'm using Linux Mint), doesn't work even if you set it to allow the plugin. I haven't found a way around it yet on any browser (Chromium, Chrome, Firefox).
It's not the Telus end where the problem is. It's the flash plugin itself and the way the browsers use it on Linux. I don't think Adobe has an officially supported Flash plugin on Linux currently.