Currency settings can be updated within your Default Listing Settings at any time!
To locate this, go to Members Area > Selling > and click Default Listing Settings in the left-hand menu.
From there, locate the 'Listing Settings' and select your desired currency.
Once selected, please be sure to hit the 'Proceed' button at the bottom of the page to save your new settings.
Please note that when you update your default listing settings, this will only apply to any new listings. To update all existing listings, please go to Members Area > Selling and click the drop-down arrow to select all listings.
Once all listings have been selected, scroll down to the very bottom of the page and click 'Bulk Edit'.
From there, you'll be able to update all listings with your new desired currency.
Don't forget to select the 'Update' button to lock in these changes!