In order to remove a store from the list of stores on the login page, the store and all its data need to be permanently deleted. If you would like to do this, we’ll need to access your account in order to assist you with deleting the store. While we’re not able to provide account-specific support via the Shopify Community at this time, we’d be happy to continue assisting you through live chat, email, or callback. Please visit https://bit.ly/3cJkx8V and log in to your account to create a support request.
In order to save some time, and help the Support Advisor you speak with to pick up from where you and I have left off, I am going to provide you with a summary of the issue as I understand it. You can share this summary at the beginning of your conversation with the agent to bring you both up to speed and help to get your answers as quickly as possible.
Issue Summary: Permanently delete store and its data to remove it from the list of stores on the login page
Since this is the next step I’ve marked this reply as the solution for the benefit of others who may discover this topic. Thanks!