Yes, you can buy it as a gift but just put your own email for the recipient. It won't automatically apply to your account. It will come with a link to redeem or the code (last I sent one to myself) then yoy can copy and paste the code or print it. If you want to be sure just test it by sending yourself $1 first in case their process has changed. More on reddit.com

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I've never had a problem with buying gift cards from Amazon. Keep escalating the issue at Amazon, until you get a $100 refund or a working code. More on reddit.com

For dig⁤ital ones you pretty much just need an email. They send you a code or link, you redeem it on your account, and that balance gets used at checkout. When I get Am⁤azon codes from playing mobile games on Mistplay they just show up as a code in my email, no physical address involved at all. More on reddit.com