<snip> To connect from these devices we have had to use a Wifi extender which affects the broadband speed. Anyone else had this and found a fix to this problem?
The only fix is to get a Hub 3 or 4 back again. The new Hub 5 uses the ax wifi protocol which is not supported by some legacy kit. That's why the extender is working, as I'm guessing it uses the older ac or n protocol. It's the way technology moves on, and sometimes old devices become redundant.
The only other thing to try before asking for a Hub swap, is to try the below. If this fails, not much else you can do.
Access your Hub by navigating to 192.168.0.1
Login with the default login info (on base of Hub) unless you've already updated it.
Go to Advanced Settings > Wireless > Wireless signal
In the Wireless frequency 2.4GHz select Wireless mode > 802.11b/g/n/ax mixed
Select Apply changes
I'm a Very Insightful Person, I'm here to share knowledge, I don't work for Virgin Media. Learn more
Have I helped? Click Mark as Helpful Answer or use Kudos to say thanks