When this option is enabled, the browser used for SSO login in the mobile app will switch from "the in-app browser of the Teachme Biz app" to "the device's default browser (such as Chrome or Safari)."
If Microsoft Intune or similar software restricts the authentication browser to an external browser, authentication may not complete in the in-app browser, preventing login.
In that case, please enable this setting.
Note that this does not affect SSO login via the web browser version (PC) or mobile browser.