Hi Iain and thanks for your reply.
Yes, it’s the original router. In the WiFi settings area on the Ipad it is showing that the Ipad is connected to the router (albeit that it says there is no internet connection which is of course expected). I have disconnected and reconnected this on several occasions and the IPad seems to find the router without issue each time. It’s when I open the Z 21 app it seems to think there is no connection. I tried going into the Z21 app settings area and hitting the reconnect button to ensure that the correct address was set but it always gives the “no internet connection” error.
I’m unsure as to why the App thinks it is not connected to the WiFi?