Additional headers

A provider can add letakof-* headers to the subscription response to limit parts of the app. Nothing is limited by default. A header restricts only when its value is disable (also disabled, 0, false, no, off, deny, in any case). No header, or any other value, allows everything.

letakof-edit-settings: disable
letakof-wifi-whitelist: disable
letakof-view-config: disable

Header	Purpose	Default	Platforms
letakof-edit-settings	Connection settings and custom rules open read-only. GEO databases can still be downloaded.	Allowed	iPhone, Android
letakof-wifi-whitelist	Whitelist mode is unavailable on Wi-Fi and Rules is used instead. On mobile data your chosen mode returns. Applies to manual choice and to network scenarios.	Allowed	Android phones and iPhone (need letakof-wl)
letakof-view-config	Hides the Full configuration page.	Allowed	Windows, macOS, iPhone, Android
letakof-wl: enable	Turns on Whitelist mode (called Allowlist on iPhone) and its Allowed domains and Allowed IP addresses lists. The only value that enables something; without it the mode is hidden.	Off	Android phones, iPhone

On platforms not listed, the header is ignored; for example, Whitelist mode does not exist on Windows and macOS.

Good to know

• The policy comes from the subscription that is currently selected. If a header disappears from a later update, the restriction is lifted.
• These are interface restrictions, not protection. A profile from a file or from another link without the headers is accepted without them. Values already entered stay and keep working.
• The app shows Changes are disabled by the provider on a restricted page.