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How to enable customer account creation within Shopify
Your customers might report being taken back to your homepage when trying to interact with your program's launcher.
If your customers aren't able to create an account for your rewards program, this is likely due to the fact that you do not have customer accounts enabled in your Shopify admin settings.
From here, select Checkout from the list of options provided.
Make sure that you have customer accounts set to either "optional" or "required".
When you have made the change, click Save in order to allow your customers to set up accounts and join your rewards program.