@Anonymous User Welcome to the community. Once you've bought a Hayu Pass with NOW TV (or started a free trial) you can watch Hayu by opening up the NOW TV app on the stick and going to the Hayu section in the menu. Note you have to subscribe to Hayu directly with NOW TV to be able to watch on the stick, if you already have a subscription with Hayu direct it won't work on the stick.
More info here
https://help.nowtv.com/article/hayu-month-pass
