Your ROOT_URL in app.ini is https://git.cloudchain.link/ but you are visiting https://dash.bss.nz/open-source-mirrors/Sonarr/commit/df593f486f2b71ae9d284fb67be75ebbc26839f9
You should set ROOT_URL correctly, otherwise the web may not work correctly.
request.AddParameter("icon","https://cdn.rawgit.com/Sonarr/Sonarr/develop/Logo/256.png");// Use the Sonarr logo.
request.AddParameter("smallicon","https://cdn.rawgit.com/Sonarr/Sonarr/develop/Logo/96-Outline-White.png");// 96x96px with outline at 88x88px on a transparent background.
[FieldDefinition(0, Label = "API Key", HelpText = "The API Key from your Join account settings (click Join API button).", HelpLink = "https://joinjoaomgcd.appspot.com/")]
[FieldDefinition(2, Label = "Device Names", HelpText = "Comma separated list of full or partial device names you'd like to send notifications to. If unset, all devices will receive notifications.", HelpLink = "https://joaoapps.com/join/api/")]