@Godzilla Hi, thanks for your reply! I tried all what you said. I set WPA/WPA2 for my wifi, try another SSID name, password. But the error is still existing sadly.

Hi, I'm having problem with my wifi router TL-WR820N WR820N 1.0 00000000 Firmware:1.0.2 Build 190905 Rel.42436n I need to refresh the page so many times like 3-4 times to load a random website or...