Orbi router with Comcast

[FLGMan]

I have a Comcast Gateway and now that I am trying to automate some things in my house it seems that Comcast puts a limit on how many things I can connect via WiFi.  If I connect an Orbi router will it solve that problem?

[FURRYe38]

Modem Combo Units:
Couple of options,
1. Configure the modem for transparent bridge mode. Then use the Orbi router in router mode. You'll need to contact the ISP for help and information in regards to the modem being bridged correctly.
2. If you can't bridge the modem, disable ALL wifi radios on the modem, configure the modems DMZ for the IP address the Orbi router gets from the modem. Then you can use the Orbi router in Router mode.
3. Or disable all wifi radios on the modem and connect the Orbi router to the modem, configure AP mode on the Orbi router.