When clicking on "Apps" inside the Etsy control panel you may see a message that SureDone "May be incompatible with the new inventory management tools". Etsy upgraded their system in 2017 to support setting individual pricing and stock levels for variations and also the ability to set SKUs on items. These are the only features that SureDone does not support today and we expect to have these features implemented by the end of April 2017.