The password page is shown to visitors before your store launches, or whenever you switch it back on ahead of a relaunch.
Content
- Header - leave blank to display "Opening soon".
- Logo - if left blank, displays your store name as text.
- Logo width - only shown once a logo is set.
This is a standalone page and doesn't carry the usual color scheme, content style, or framing text options found on other sections.
Your password message itself is set under Online store > Preferences in Shopify admin, not in the theme editor.