I posted it here so more people would be able to read it

So there is actually a chance I can buy an S2 license because my aunt asked me for anything I wanted, and since LFS is cheap in the US, I decided to go for it. However, since she is abroad, she has to use HER credit card, but in the official website it stated that you have to be logged in. So how the heck am I going to get a license without having to give my account details?

Just ask her to buy voucher, not license, and then upgrade your account using it.

I thought for a voucher you had to have an account?

nope.
Next time read carefullier

Edit: I fail.
Make her another demo account, she will be able to buy voucher then.

There's an option in the LFS shop to buy a license for someone else. When she buys the voucher, it'll give her a code. Then just add that code into your own account, and welcome to S2