Multivendor ecommerce website with sub-domain for sellers -- 2

Our multivendor ecommerce website is based on woocommerce. We need a sub-domain for sellers (single sub-domain) where sellers can do all of the sellers related tasks. The sub-domain is kind of seller portal. And main website is only for buyers. We need you to sync both of them so that any change made by the sellers on the sub-domain should reflect on the main domain. (Please note: This is NOT the multi subdomains thing for each sellers (what dokan plugin offers) we need a single sub domain for all sellers.)