Harmony remotes use RF to communicate with the IR blasters, so no, there’s no network issues. As for the Harmony app…I never used it, because why would I pay a couple hundred for something that I could do with a free app that uses infrared so no network issues? That, though, would probably have network issues because I don’t think cell phones do RF other than Bluetooth and WiFi.
Harmony remotes use RF to communicate with the IR blasters, so no, there’s no network issues. As for the Harmony app…I never used it, because why would I pay a couple hundred for something that I could do with a free app that uses infrared so no network issues? That, though, would probably have network issues because I don’t think cell phones do RF other than Bluetooth and WiFi.