I registered a new Shopify domain, as I'm rebranding my business. I would like to transfer my old store to my new domain, so that when users go to my new website URL they get to see my old store (I will have changed the logos etc.)
I have tried to go through the process outlined here but it's not working.
If I understand, you have created a new account which has generated a new ".myshopify.com" URL. You would like to transfer the content from your old account to your new account so that your customers will see your content on the new URL. Is that correct?
If yes, then the transfer process you're trying would not work as that only works for purchased domains and not the free domain you're provided. However; you can back up and duplicate some of your content by following our help document here. You can then import that content into your new store and recreate the content you weren't able to transfer over.
Let me know if you have any questions.