I subscribed to the app but when I login, the app notifies me the workouts aren’t available?

It could be a couple of things. First, update the app. Then, click the "Restore Subscription" button in the Settings. If it still doesn't work, then force close the app.  Please refer to this video on how to force close an app. youtube.com/watch?v=W4dxhc5b68g

Double check that the email you used to subscribe is the same as the current account.