Hello Everyone!

I share my internet with my neighbours.I have connected their cables to my modem(4 Ethernet Ports in total) and they use it as they like ( on laptops, tvs, desktops etc...).Just a few days ago, everything was going fine.Then my ISP upgraded my connection and GAVE me new username and password to start browsing.So I went to 192.168.1.1, logged in, reset the settings(restore default settings) and then used that username and password.
So we started browsing and all was fine.However, the resetting did something.Two of the ports are working (ETH1, ETH2).ETH1 is connected to my desktop and ETH2 is used by another neighbour.However, another neighbour says he's not getting the internet.I guessed it was problem regarding ports and I was right.I disconnected my ethernet cable and connected it to ETH3 and ETH4 and it SAID it was connected but was getting no internet access.However, everything was fine in ETH1 and ETH2.
What do I have to do in my broadband settings ( 192.168.1.1 ) to get the other ports to get back to normal?
P.S: A Huawei HG532B EchoLife modem.
Here's a screenshot , and I think I have to set something right from here:


[recovering DISK space, attachment deleted by admin]What does LAN setting show for settings? Everything in WAN looks correct for your setup.Does the documentation indicate there is an option to disable PHYSICAL ports?
If not, the ports have been damaged.