Are you trying to log in with the Optik TV user ID you set on the PVR? What error message are you seeing?
When I started up with Telus TV, for some reason the verification messages on the TV wouldn’t come to my main email address. That resulted in my using one address and password for my Telus account and another for signing into the TV and the Telus TV app. I’ve never understood why and because I lost all my recordings twice, I just leave it that way.
Anytime I am asked for my email/password when signing into Apps on AppleTV where they want to know I have Telus as a TV provider, I have to use that “other” password/email combination.
I also had had to use yet another username/password combination for this site.
I’m only mentioning this, in case it has some relevance to this discussion.