When your users don’t like what you offer, they will use something else. If your secure communication app is cumbersome and slow, people will take to insecure but user-friendly commercial software.

The U.S. Secretary of War couldn’t be bothered to use the Pentagon-supplied app and leaked classified information on WhatsApp. Now, Russia is restricting Telegram only to figure out that its soldiers in Ukraine depend on it.

Have you compared usage data with expected usage? If those numbers are far apart, it means your users are finding other ways.