@EarthbornCollective: Just so you know, even if Etsy Support or the Help Pages sent you here this is a seller peer to peer forum, and should not be considered a way to contact Etsy, if that is your hope (although Etsy moderators do sometimes read and reply to posts).
Every eMail from Etsy support should have a link something like "I Still Need Help". Click on that link in each reply from Etsy (or actually reply stating that you still need help) to keep the report alive otherwise Etsy will assume that it is resolved. You may have to do this innumerable times, before anything is done but do not give up. DO NOT open a new issue or contact Etsy multiple times about the same issue (doing so appears to close the one you already opened and puts the new one on the bottom of the pile).
USPS shipping adjustments need to be done through USPS (https://apvdisputes.usps.com/ or VerifyPostageHelp@usps.gov) because Etsy is just a vendor for Pitney Bowes, the party you actually buy the labels from.
"None of my Registration information has been changed....." The applicable laws require more frequent and in depth validations of sellers. Updating your bank account information probably triggered a required reverification.
