A:AnswerSeems to be only available for store pick up. Same thing was happening to me - getting a sold out message when trying to checkout. Keep trying and my persistence paid off.
A:AnswerEverything I’ve read has said that there is a restock coming but Nintendo did not tell when, that could potentially take up to a month I would assume. Their manufacturing got pretty delayed and even though they are starting to manufacture again it’s not at 100% manpower still. If you keep checking in the mornings I find that there are more restock opportunities and I was able to snag one at about 10 o’clock in the morning one day.