Go into your settings (not the shop control panel but the actual Etsy settings)
Click on the security tab.
Scroll down to the bottom.
There is a running list of logins by location, IP address and system used to login (such as Android, Iphone, different browsers, etc.)
To the far right of each entry line is a column that says signed in or signed out.
If you are signed in on any of your lines, you will not always receive the 2 factor authentication because the system still reconizes your device.
If you sign out on any line that shows you as signed in, then clear your cookies, the 2 factor authentication should return.
It is also a good idea to check this list regularly for unrecognized login attempts into your account. The list goes back a very long time. I think my list has login data from years back.
