I just read a post this morning with the same problem, and I've read others over the past few weeks, so it would appear that Etsy is having some kind of glitch. It's very doubtful, unless it's a good customer, that people will go through doing anything on their computer to complete a sale. I wouldn't. I know my computer and if a seller asked me to do all that, I'd go elsewhere. I'd simply explain that it seems to be an Etsy glitch that you are trying to get fixed, and they might want to try later. They probably won't unless they really, really want what you have, but it at least takes some responsibility for the situation, is what the customer wants. And with vintage, they might not be able to find it elsewhere, so chances are they'll come back. Good luck.
P.S...I'm a 55 year retail gal and have learned over the years that although the customer isn't always right, there is that very rare case where you just want to say no, go somewhere else. But unless a buyer is absolutely the worst, you always take responsibility for whatever they are complaining about, try to fix it, and then apologize for the inconvenience. I think it was in the 90s that I took a course on retail selling and that was drilled into you. I realize that in this day and age, people just don't want to take responsibility for anything they do, but it was a good retail tip back then, and it's still a good one now.
