Johnny166 - Its unfortunate and surprising that Handy does not highlight that requirement more clearly if thats the case
Did you try googling how to login to your wifi router? Most if not all routers are able to be logged in as admin (usual shows login on a sticker on the router) and you can actually turn on or off 2.4 ghz / 5 ghz channels within the admin panel
If for some reason you can't then I would look into getting a router that can do 2.4 ghz, as the Handy experience is really good once you get it connected, so it would be a shame to not be able to try it out as much as possible first before any considerations of returning it
