Hi Lisalulabelle, welcome to our community forums.
Apologies for the delay in response, I'm sorry to hear about the issues you've been experiencing, are you still having issues with this?
By awful signal do you mean the signal when using services such as On Demand and Catch Up or just the general signal for the live TV channels? If it is the latter you wouldn't notice a difference by rebooting your hub as the channels come from the coax cable connection.
If you're still experiencing either poor signal or no WiFi let me know and we can work together to get this sorted for you.