This function will not work because access token is missing.

Hi
In the auto sync and fulfilment sections I am getting this message.
“This function will not work because access token is missing.” next to it there is a button that says get Access token.

All is installed correctly and products are imported and synced ok just these 2 section i get this message.
My may concern is auto sunk and update of prises and stock automatically so i don’t have to click sync every time manually.

Thanks