First of all, assuming you have turned your Wifi Access Point, and Speedlink on as instructed
The first thing to check if you actually have , is whether the SpeedLinknnnn (where nnnn is the serial number) is visible. If it is, the Speedlink is not connected to the SpeedLAN and hence you get the IP error. Make sure you follow the instructions found in the user manuals
If everything has been done per instruction, and you still have no luck, we suggest you go into Settings/General/Reset/Reset Network Settings on your iPad and reset.
Reconnect all you devices and you should be ready to go!