but steam tells me that I can't
could it be that we should be friends for a long time?

You need to be friends for at least 3 full days.

Thanks

Keep in mind that digital gift cards won't remove the limited status of an account, incase that one of the reasons you are trying to do so.

引用自 Spawn of Totoro：

Keep in mind that digital gift cards won't remove the limited status of an account, incase that one of the reasons you are trying to do so.

sending one does remove the status, receiving one doesn't.

引用自 rawWwRrr：

Yes. The digital cards through Steam are not region locked.

^This.

Note this is a work around if you're unable gift games to someone due to price tag being greater than 10% in terms of currency differences. Example if Doom cost $20 in your country, and Doom cost ₹900 in your friend country, couldn't gift due to greater than 10%, work around is you gifting digital steam wallet funds directly via steam, which they get a pop up on their notification, and all they have to do is redeem your gifted funds, and buy the game.

引用自 Ettanin：

引用自 Spawn of Totoro：

Keep in mind that digital gift cards won't remove the limited status of an account, incase that one of the reasons you are trying to do so.

sending one does remove the status, receiving one doesn't.

Correct. The one that use external payment method get their restrictions removed becoming unlimited account. The receiver of the gift doesn't, they have to put money on their account using external payment methods.