Thanks
The issue was indeed simply the Ipad and the computer weren't ont he same network.
Wifi Ipad was on a different subnet than my wired computer due to my daughter installing an extra router upstairs without me knowing.
The funny thing was that one stair below my office the Ipad was connected to Skydemon but in my office the Ipad connected to the closest router (which incidentally had the same SSID and password, making it invisible)
Though one to troubleshoot - and all my fault - but all is now working perfectly.