.
I hope that means you used a lot.
Do you have more than one Google account on your phone? It may be that your whatsapp is associated with one account and your credit is with another.
I had to uninstall whatsapp and reinstall it from my other account in order to pay with my credit.
Nope, same account. I don't even see an option to pay with credit, just Google wallet.
Requires Android
2.3.3 and up
i cant use it , i have
LG vs740
Android
2.2.2
Hmm, time for a new phone?