If you need to reconnect your Etsy store, this is how to do it.
In your GoCustom account go to Integrations > Etsy > Settings.
Click on disconnect and wait for the screen to refresh.
Now click on Connect My Store, An Etsy screen will appear, make sure you are linked to the correct account and click on verify. Your account will now reconnect.
A good way to check it is working correctly is to go to 'Link Products' and the system should show you all the products you have linked with Etsy. If products show less than 100% linked,  consult this help info.