Yes, you can!
The Pro and Premium subscription plans allow for up to either 5 or 10 sales channels to be connected under one subscription. If you want to add more than 10 sales channels then please reach out to the support team who can get this set up for you.
Each of the following counts as one sales channel:
1x Amazon Merchant ID (for Amazon connections, there is no limit to the number of marketplaces connected via each Merchant ID),
1x eBay store,
1x Etsy store,
1x Shopify store
1 x Walmart store
1x TikTok Shop
Each sales channel can be connected to the same or different Xero or QuickBooks accounts. This is easy to manage during setup.