Payment Issue

https://preview.redd.it/f2jmhxpdd8ug1.png?width=1483&format=png&auto=webp&s=2b42908714d0d2185bcb26b8ae7c099a1b9fe4e6

I wanted to purchase a package in AQW and initially chose a payment method which I though was a hassle, so I went bank to the account manager to start the process again. When I tried to pay for it, I'm now getting an error (screenshot attached).

It's been 2 hours now and I still haven't been able to purchase anything as this is blocking me.
Has anyone ever encountered this or has a fix for it? Would appreciate it, thanks.