Teapplix ActionShip integrates with Wayfair for order sync.

First, login to your Wayfair partner portal, go to Developer =>Application Management, and create an application by clicking on "New Application" (you can use “ActionShip” as the application name). After that you will receive the Client ID and Client Secret value.

In ActionShip, go to Integrations => Marketplaces & Carts, click + Add Marketplaces, and select Wayfair. Click Close to close the available marketplaces window.
Click + Add Wayfair Account, copy & paste the Client ID and Client Secret from Wayfair. Click Save.

Once you are connected, to test the connection, you can click on the Sync Orders button.