@pwar66 wrote:
can I fix this my putting in modem mode and getting a decent router?
Probably. Do you have a laptop/PC that you can connect direct to the Hub using an Ethernet cable?
If so, do so and put the Hub in Modem Mode - see if you have a steady connection to the laptop - if you do you should be able to put your own router in place and go from there
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I know a bit about Wi-Fi, Telecoms, and TV as I used to do it for a living but I'm not perfect so don't beat me up... If you make things you make mistakes!