To share one fulfillment (AO) account across several stores, or to add it to a new store, send the fulfillment account email into the chat and clearly name both stores involved:
store where the account is already added
store where you want it added as well
Include the region/marketplace of each store (e.g. "United States – ragstradinginc", "walmartdu_12") so the team assigns it to the right place.
Support adds the account on the backend and confirms in the chat once it's done.
Note the split in responsibilities: the team can add, share, disconnect, or remove a store for you, but they cannot delete your Easync account itself — you do that yourself from Account Settings (my.easync.io/account/settings).