Uhhhh. do you know what a wifi hotspot is?
Starbucks, Pizza hut, Dunkin donuts, Bob Evans... etc. Here's where to find the TWC ones, some are no longer in service and there's others not on the map.
If it's a leased all in one combo, and you need to use it's router for multiple devices, why did you put it into bridged mode? Or better yet, call TWC and have them do it,
NAT allows multiple prts and multiple wireless devices...
It appears that you own your own router/wifi and you are connecting it to a leased modem with router/wifi included.
call them and have the wifi bridgedd(turned off wifi in the combo modem), then your wifi router should work all right.
You cant daisy chain routers, with software changed they can bridge or shut off the wifi hotspot in your leased modem with wifi included.