There is no obvious way provided to reset Sandbox to its original state, before password was set. Settings like passwords are written to secure settings file not associated with specific app, and require third-party tools to clear, instead of regular clear storage. And the only way to delete password from the app seems to be by using security question, even though I know the password. Not even sure such questions make sense, as they cause serious security issue if answered with real information, which is often easily obtained.
There is no obvious way provided to reset Sandbox to its original state, before password was set. Settings like passwords are written to secure settings file not associated with specific app, and require third-party tools to clear, instead of regular clear storage. And the only way to delete password from the app seems to be by using security question, even though I know the password. Not even sure such questions make sense, as they cause serious security issue if answered with real information, which is often easily obtained.