Here’s what consumers have asked with answers from Birchbox staff and previous consumers.
Try emailing them, I've seen comments that say it works for them.
It depends. If you subscribed mid-month, then it could be anywhere from a couple of weeks to when the next box is out. The first box I received was a random box roughly a week after I first subscribed. After that, I was able to choose my samples or the curated box as well as add-ons. Your account is charged around the 1st of every month, and boxes are shipped soon after. I typically get mine on the 10-12th of the month, but I'm sure that varies depending on where you live.