Apple TV + on Roku stops recognizing my subscription

I got a 1 year subscription from buying a new Mac, which I access through a Roku stick. The subscription started in June 2021, and I started watching Ted Lasso season 1. After 2 episodes, I got an offer for a free week then pay. So I started just streaming from my iphone app to the Roku stick. Now the same thing is happening with The Morning Show. I’ve tried deleting and reinstalling the channel from Roku, logging out and in again, etc., but I seem to have been kicked off my subscription. Any ideas?