C7500 UI not responding and broadcasting 2.4G

So just curious did you get the 2.4Gb broadcasting and what was the solution to get it working? 

I've tried everything I could think of and can't get the 2.4 to come on. I think it's related to the admin settings that I can't do anything on. the page acts as if it's trying to redirect me to whatever settings I'm trying to get to and doesn't display the images and prompt for my login everytime i try to open a tab/setting. I've also tried making changes in the Genie App on my laptop, it'll make the changes in the app but does no effect to my router.

ISP end is good, router is good only thing that is preventing me to reconnfigure my router is the routerlogin.net/192.168.0.1 login works but not functional..I have owned many of netgear equipments and never had any issues until last week. i understand you guys are moving to an app version, could this affect the website from working?.

Any browser should be able to gain access to the modems web page at 192.168.1.1

Have you tried disconnecting the modem from the ISP coax cable line, then press the reset button for 10 seconds in, then release. With a ethernet connected PC, try Firefox or Opera browser to see if the setup wizard is seen at 192.168.1.1. A long in screen should not be seen here. 

I have not tried this step but I'll give it a shot and will let you know. My troubleshoot had gotten exhausted and running out of things to try. I can replicate the same problem on 8 different devices and 2 laptops no matter how I configured my browsers settings and site & security settings in different browsers.

I just remembered my 2.4 had to be enabled in order for it to come on but I can configured anything.

Factory reset should have 2.4 and 5Ghz radios enabled by default. 

I just disconnected the coaxial cable from the router followed by a reset. With RJ45 connected to a laptop and freshly installed Firefox and Opera - neither one of the browser can reach 192.168.1.1 shown in screen shot attached

I couldn't ping 192.168.1.1 but if I were to ping 192.168.0.1; I get a response back.

Result below:

C:\Windows\System32>ping 192.168.0.1

Pinging 192.168.0.1 with 32 bytes of data
Reply from 192.168.0.1: bytes=32 time=3ms TTL=64
Reply from 192.168.0.1: bytes=32 time=3ms TTL=64
Reply from 192.168.0.1: bytes=32 time=10ms TTL=64
Reply from 192.168.0.1: bytes=32 time=3ms TTL=64

Ping statistics for 192.168.0.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 3ms, Maximum = 10ms, Average = 4ms

C:\Windows\System32>ping 192.168.1.1

Pinging 192.168.1.1 with 32 bytes of data
Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 192.168.1.1:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

Any other idea besides buying a new device?

Last thing to try is a 30-30-30 reset. 
If this fails to bring access the modems web page, I think the modem needs to be replaced. 

This is all I have been getting since my router started to act weird last week. Does this event log mean anything? See attached

Any Criticals, Errors or Warnings seen in the event logs are indications of a signal issues on the ISP coax line up to the modem. Any of these seen in the event logs needs to be reviewed by the ISP and resolved. 

Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box. 
Be sure your using good quality RG6 coax cable up to the modem. 
Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.
Be sure to power OFF the modem for 1 minute then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
https://highspeed.tips/docsis-events/

Thank you for the steps. After all of the troubleshooting that I have done already, the issue is not on the ISP end because everything else works just fine, just can't configure anthing in the admin console. However, after all of the settings I was able to get to, they made no effect to my changes but ONE THING....I was surprisely ABLE to disabled NAT Mode so I could use the modem/router as just a modem alone connecting a new router to it without an IP conflict. I THINK...the issue is with the router part itself, again not an ISP and I may know how to fix the combo (use the reset inside the board). My conclusion is that router part may have gotten hung up and needed a master reset if the reset button doesn't work from the outside, you go inside the board to force it (push button). 

I will try this and let you know but really dont want to mess with it since my internet is working as intended and configured the new router already.

Yes modem mode would work for you as well for a external wifi router.

However again, Cable Connections and Event logs are still important as they report issues and such from the modem side while in modem mode. Be sure the ISP reviews them and resolves any issues seen there. 

Good Luck and enjoy.