How to use multiple coupons of facebook ads

As im having two facebook ad coupons and i want to use them for advertising, i know that one coupon can be used for first time in any facebook account. My question is if im having two facebook accounts and use the two facebook ads coupon each for one account, do i need two different credit cards or can i use the same credit card number for the two accounts to activate through facebook ad coupon...?

Thank you
Regards

You should use two credit card for two Facebook account with coupons.