@Hify The new FW release is with a name : TL-WR841Nv14_US_0.9.1_4.19_up_boot[220816-rel43928].bin Your current FW release is with a name: TL-WR841Nv14_US_0.9.1_4.19_up_boot[220914-rel31655].bin I...

@SirMichael That's a good news. So, now you can configure C3200 as you want and it should behave as expected. You can even configure the C3200 as you wanted initially: WAN IP address:192.168.1.254...

@SirMichael That's weird. Are you using the LAN1 port of your HG6245D to connect to the C3200 ? If not that could be the reason for this behavior. I found the user guide for HG6245D router -...

@SirMichael When C3200 is with 'Dynamic IP' internet connection type and connected by its WAN port to your main router, can you send this screenshot:

@SirMichael OK. Can you tell what's your main router make and model ? How you have connected the two routers, which ports you use on both of them ? Set Internet Connection Type: 'Dynamic IP' on C3200...

@SirMichael Yes, I see the problem here: Put 1.1.1.1 for primary DNS and 8.8.4.4 for Secondary DNS. Then you should be able to have internet access - that's assuming your main router has its LAN IP...