@casino Please understand that we can’t help you fix the problem unless we have a clear understanding of exactly what your problem is.
On March 3, 2018, after we helped you set up the D-Link with pcWRT, you said:
Now, internet works through the LAN, finally!
On May 24, 2018, when reporting that you had some problems on your Windows XP, you said
i have this problem only on my home pc. I use Windows XP SP3 and for to clear the DNS i use this command: “ipconfig /flushdns”.
Now you are saying it NEVER worked for any type of device. If it never worked for any type of device (Windows and Android, for example), why did you suspect that “that was my old pc with windows xp sp3”?
All these statements, put together, paint a blurred picture of what problem(s) you are experiencing. And it doesn’t help in finding the true cause of the problem.
In order to identify what problem or problems you are having, let’s take a step back and start with the simplest configurations.
Configure the D-Link to have LAN address 192.168.2.1. Enable DHCP, disable UPnP, remove any DMZ entries. Connect the D-Link only. Does Internet work for all devices?
Configure the pcWRT to have LAN address 192.168.1.1. Select DHCP client for Internet settings. Disable Access Control and UPnP. Connect the pcWRT WAN port to a LAN port on the D-Link. Does Internet work for all devices?
If the above works, turn on Access Control with a single Default profile. Uncheck “Safe search”, “Block literal IP addresses”, and “Block proxy, VPN, TOR”. Does Internet work for all devices?