not sure this will help anyone else but.

i was having the same problem as everyone else 601 error.

so i gave up and decided to listen to some music(i'm stationed overseas)

so i turned on my VPN (Overplay, set to US west coast) and forgot to turn it off before i attempted again.

i was able to get through and make a payment.

i cannot say this was the fix but it is the only thing i did different.

hope it helps