To get the most from Optiseller, we require to access your eBay data. To allow us to do that, we ask that you "link your store".

You will see this when you first login and the easiest way to do this is to use the "Link a new store" button on the top bar of the page:
​

You will also be prompted to link your store for tools that require a link.

When you click the button you are taken through the eBay authentication process.

And when complete, Optiseller will start to process your data and inform you when the eBay Store Performance Dashboard and Aspect Finder+ reports are ready.