I am assuming here that you have the HD Specialty Pack and you already subscribe to WSBK in SD (channel 343). The HD version is on channel 571. If you do not have the SD version, that would explain why it doesn't work in HD - the two are linked. It is available only if you have the SD version.
Assuming that you do have the SD version and the HD Box/HD Specialty Pack, then can you please describe what happens when you go to channel 571? I will need that information to properly determine what could cause the problem and give you options on how to resolve it.
I am a Rogers employee, but my comments are my own and do not necessarily represent the views of Rogers or its affiliates.
Je suis un(e) employé(e) de Rogers mais mes commentaires sont les miens et ne reflètent pas nécessairement le point de vue de Rogers ou d’une société de son groupe.