1. First, open the system preferences, select the network, click WiFi, select WiFi in the Advanced tab, click Delete All Networks in the preferred network box, click OK, and click Apply.

2. Then select WiFi on the webpage, click the minus sign to delete WiFi, and click Apply.

3. Finally, open the webpage in the system preferences, click the plus sign at the bottom of the left border, select WiFi in the interface, write the service name casually, click Create, and then click Open WiFi to link WiFi.