Step 1: Go To The Power>Switch the user.
Step 2: Add +New User>Create a user>Accept>Next
Step 3: Enter the user email and password which you purchased from GameCards.Net. And Sign in.
Step 4: Click to the OK and Welcome to the purchased account.
Step 5: Go to the Settings>Account Managament>Activate As Your Primary Ps4>Click ''Activate''.
Step 6: Go to the Library> Purchased> Select The Game> Click To ''Download''.
Step 7: After download start (You do not need to wait for the installation to finish.) go back Power>Switch User>LOG OUT OF PS4.
Step 8: You can see that the game is currently downloaded. When the installation is finished you can start playing the game from your OWN PS4 PROFILE.
Please play the game from your own Ps4 account after installing the game. Do not play from the account you purchased. And Never Re-sign to the purchased account after start the download.