Sign in with the Device ID and Device Key shown in the app.
Open the app on your TV or phone: both codes are on the first screen (and in Settings).
The app picks it up on the next launch (or press Reload in the app).
Activation is purchased inside the app, with Google Play — nothing to pay on this page.
Pay online
Aquar Player never stores or streams any content: only the address of the playlist you own.