How do I find out which account my subscription is linked to?

You can confirm at any time which account your subscription is linked to by going to the Connect purchase settings, where the associated email will be displayed.

On iOS:

Go to Sportsnet+, tap on the profile icon (top right), see the option for “Connect Purchase – ON” and your email will be below.

On Apple TV:

Go to Settings, see the option for “Connect Purchase – ON” and your email will be below.