Mattermost does not trust self signed certificates imported manually by the user. When mattermost is deployed locally/LAN/VPN without access to the internet, the Android app does not work.

I suspect that it does not trust self signed certificates from the user store on Android/iOS and refuses the connection. Adding this simple feature would make the app invaluable.

Chrome on Android already trusts self signed certificates imported manually into the user store. When visiting Mattermost via IP address on the Chrome browser, it does not display any errors/warnings about the self signed certificate.