Existing Members of your site must be logged in to their account to purchase additional Offers from your site. As long as your Member is logged in, they can purchase additional Offers from your Store page, your Sales pages, Pipelines, email marketing and add their additional purchases to their Library.
In this article:
New Checkout Template
If you are utilizing the New Checkout Template for your Offers, consider adding friendly copy to the Offer Details encouraging existing Members to log in before purchasing.
Legacy Checkout Template
With the Legacy Checkout Template, your customers will be prompted to sign in if they have an existing account prior to purchase: