I see other people's devices on my network?

QF support is useless and couldn't resolve the issue. They said the other devices would go away but they haven't. I don't even own an Apple device but I see many other people's iPhones, iPads, and printers when I go to the network tab in my app.

This is a massive security concern and it is baffling that QF is unable to resolve it. Has anyone else been successful?