Add your list
On the first screen, choose I have an IPTV list. Under Xtream server, fill in server, username and password; under M3U list, paste the link. Confirm with Sign in: this button opens the list, not the account.
Sign in to your account
Open Settings and, in the Antena Play Pro section, choose Sign in. The TV shows a QR code and the TV code: point your phone's camera at the QR code or open antenaplay.app/ativar, sign in with your email and confirm. The Sign in with email invitation, when it appears, leads to the same screen.
Subscribe to Pro
With your account connected, open the Pro screen, pick a plan and pay through Google Play. On boxes and sticks without Google Play, the screen shows a QR code (Subscribe on your phone) and you finish on the website.
Sign out
Sign out of your Antena Play account, in the Antena Play Pro section, disconnects the account and frees the device's slot. Note: the Sign out button at the end of Settings removes the lists saved on the device, not the account.