What brands use QuadPay? December 12, 2018 06:20 Follow us on Instagram where we post new merchants weekly - check us out @QuadPay. Related articles Contact Support Is there a limit to how much I can spend with QuadPay? Why was I not approved to use QuadPay? I tried to use QuadPay but got an error message when I tried to check out? Will I be notified before I am charged for an installment?