What type of wifi dongle are you using?
What device have you connected the wifi dongle to?
Are you trying to use it for the first time?
Yes, please allow me just a few minutes to prepare some information for you..
The problem may be with the wireless network you are trying to connect to - what type of router are you using?
How far away is it from the TV?
The problem may be with the security settings on the Sky hub -
could you try either connecting the TV to a neighbour's wifi or move the TV to another location to test it and confirm it can connect to a wifi network elsewhere ok?
Once this is confirmed, we can troubleshoot the Sky hub - it will likely require changing the security settings to a compatible setting.
Alternatively, you could use powerline adapters to connect the TV to the internet:
Yes, you can reply back here at any time after rating my service, and we can continue for no extra charge :)
Do you have a small indoor antenna you could use?
Has the TV already been set up and tuned in, or is it brand new?
Does the remote have a YouTube, Netflix or similar internet buttons?
What happens if you try them now?
Have you already tried to set up the TV with your internet settings?
Have you tried restarting your Sky router?
Ok, can you let me know what settings you are using for IP address, subnet mask, and gateway?
Is it an option to see if a neighbour or friend would let you connect to their wifi using the TV first, it just rules out a compatibility issue with the router?