I cant download the paypal app on my phone or tablet, it says neither is compatible, but I want to try to purchase inside dollar general. What can I do?
One option you do have, though it will be less immediate, is you can apply for the Debit Mastercard. It treats your balance similar to a checking account and withdraws the funds from it when swiping for a purchase. If you have a back up set for it (such as a bank account, credit card or the like), if the balance doesn't cover the whole amount of the purchase. It also comes with 1% cash back on signed purchases.
