It's probably a scam. They are phishing for your financial information and will drain your bank account.
First, look at the message on a computer or browser and see if it's in the "from etsy" section of your inbox (not on the app). If not, it's FAKE. All real messages from etsy will be there.
When/if etsy needs any ID or financial info from you, there will be a notice on your dashboard, not by messages or email.
Read the forums and familiarize yourself with common scams. They prey on new shops, knowing that you don't know how etsy works.
