@hey-klodg In exactly what way should we improve our website? I think we mention it pretty clearly on https://flic.io/homekit (multiple times) that you need an Apple Home hub (apple tv, ipad, homepod etc.) to make Homekit work with Flic Hub LR.
About "setup parameters for the network", we don't have that much information since Apple has not told us anything about this. To us it's pretty much just magic how Apple talks internally between its own devices (for example iPhone to Apple TV). The only thing we know is that the Flic hub and the Apple TV must be on the same network, obviously. In your case, did you have the setup that your iPhone was on the same network as the Flic hub, but the Apple TV was on a separate network? Or was it that your 3rd party devices (lights or whatever that you wanted to control from Homekit) were on a separate network?
About Wemo, please let us know exactly which Wemo devices you have so we can investigate.