Why can't I use my Google Play Store reward to purchase boosters?

chill300

No option to use Google play store reward. Why?

Brenda777

@chill300 Your account with Google has to be 
set up with a card.

I hope this helps.

LisaJWiles

My Play Store is set up with a card, it's under the registered name in this game in the community but link to my old account, without Facebook connect ?