They should work fine but you can find a list of "prohibited countries" on the card's FAQ page. Keep in mind that these cards do require ID verification, unlike the ones they used to provide some time back.
Thanks for the heads up about identity verification.
Normally it should work fine. But some webshops have problems with this. As a test, you can try a smaller value first.
Thanks for the answer.
When the card has a very small balance, like $1 or $2, do you refund it or can the user recharge the card?