Finally, an answer! Shocked how difficult it was to find your answer, so I'm going to repost using the tag words I searched unsuccessfully with, i.e. "online guide".
Also caught by surprise that to access the guide, one must click on "Manage PVR" link, which is not exactly intuitive. It would be nice if the Rogers page had a "TV Guide" link clear from first sign in page instead of going through this cryptic pathway.