Hi @mitashdigital
I’d be happy to help with your query. To clarify, do you have more than site i.e. A-shop and B-shop being 2 separate stores?
Each site can only connect to one Facebook account, hence if you have multiple sites then each of them could connect to the respective Facebook accounts.
In addition, please note that an additional extension is required to set up Instagram Shopping – see here for further support:
https://woocommerce.com/document/facebook-for-woocommerce/#section-46
I hope this answers your query, but please do reach out again if we can assist further.
Thanks
Jenny H.