How to Find My Storefront Password
It is possible to set a password for your storefront so that only people with the password can access your store. This is useful if you don't want visitors to access your store while you are setting up, doing maintenance, or if you are selling only to select clients. The default setting for the storefront password on new stores is turned on.
With the storefront password enabled, we are unable to fully perform and verify the app snippet installation for your shop and ensure Product Customizer is working correctly. For the fastest service please always include your frontend password when contacting support.
To find your shop's frontend password first log into your Shopify store admin and go to Settings > Online Store and scroll down to the bottom of the page:
If the "Password protect your storefront" checkbox is enabled, then your storefront is currently protected, and the required password is shown within the "Password" text box.