Why does the network method of DHCP fail?

DHCP (Dynamic Host Configuration Protocol) is a network protocol that automatically assigns IP addresses and other network settings to devices on a network. It eliminates the need for manual IP configuration, making network management easier.
If you are using DHCP, please switch to static IP and refer to the following details:
1. Without using a router, you can test whether you can successfully access the Internet;
2. After your computer accesses the Internet, check the computer network parameters and record these values: IP, subnet mask, gateway, DNS, and MAC address;
3. When accessing the Internet on the computer, unplug the network cable plugged into the computer and plug it into the blue port (WAN port) of the router, and then use the network cable to connect the computer from the LAN port of the router;
4. Enter the router management interface, set the router to access the Internet statically, fill in all the network parameters recorded for the standalone Internet access just now, and paste the recorded MAC address);
5. If the issue persists after the above troubleshooting steps, please refer to the following details:
(1). Please check whether the computer network parameters are correct;
(2). Please change the WAN port rate;
(3). Please change the network cable connected to the router WAN port (category 5e or category 6 8-core network cable);
(4). Please update the router system to the latest version;
(5). Please reset the router and try.