I recently spent time out of the country in the EURO zone. Kept any eye on shops while I was away via the App.
Etsy decided to change my payment default currency in my account so everything in my shop was being offered in euros .......and no this wasn't just showing as Euros as I was in the Euro zone , it actually changed my default currency in my account.
Back in my own country and it's sorted now, but took numerous tries via desktop to sort as it kept defaulting back again.
when travelling, check your default payment currency peeps