Read this if SE doesn't want your money!!!

[Oextra]

If you keep getting error 401 when you're trying to extend your service, I have a solution for you. It's somewhat long but it works:

1. When selecting a method of payment for whatever amount of days you select, choose Crysta.
2. If you don't have enough Crysta, select add Crysta in the box right above the box that shows the amount needed for the renewal.
3. Select the correct amount of Crysta you need to renew your service (EDIT: you can select the "Specify amount of Crysta to add to your account" (last option on the list) to enter the exact amount of Crysta you want/need).
4. Choose UltimatePay.
5. Select Paypal as the method of payment.
6. Purchase the Crysta with Paypal (EDIT: If you try to pay with a credit/debit card you'll get the 401 error).
7.Now you can continue renewing your subscrition without worrying about getting any errors.
8. If for some reason it doesn't show the Crysta you bought in your Crysta Balance after you bought the Crysta, just log out and log in and it should come up.
9. Then proceed to renewing your sub with the Crysta.

This should work fine. It's a bit longer than it SHOULD take but at least it works and will let everyone who wants to play, play. Also keep in mind that if you tried numerous times prior to this and got errors, check your bank statement for missing money. It's happened to many people (including myself). I'm not sure when it'll be fixed but bring it up to SE asap.