Hi, if you have boughted the combo the controller should be allready paired from the factory settings. The only thing you should do is:
1- Download DJI GO4 to your SmartPhone
2- Power on you control
3- Power on your spark
4- Open DJI GO4 and select the option to connect your AC, it would ask you to scan the QR code placed on your remote.
Regards from Argentina!