You do not buy the plan again
A new television needs the player installed and the same username, password, and server address. The subscription stays on the account. You do not order a second plan unless you want more screens.
Install from that television’s store. A Samsung store install does not carry over inside the set when you replace the television. The steps match Smart TV setup or Fire TV, depending on the new set.
Free a screen
The old television may still be counted. Sign out of its player, or unplug it and sign out if you still have it. Moon Start has one screen, so the new set will be refused until the old one lets go. If you no longer have the old set, tell us on the contact page and we will clear it.