Pay Netflix with coupons?

I have a Netflix acc for 4 people I pay only with gift cards (I have no other payment method deposited). I have been doing this for about 9 months now and everything works fine. Today, however, I wanted to redeem a voucher and it does not work. The following has been around for several hours now when I try to use Redeem Gift Cards to enter the code. Does anyone know what that means now and whether it will go again during the day? (It's just 4:15 am and I created the account at 12:50 pm)

It's just 4:15 at night. All right.

Everything seen today.

Try it with another device or try another browser.