my WiFi signal is fullbut I can't connect to it and it keeps saying authentication failed and diconnected I am sure I typed th

[Samkido]

Searching for how to stop it because I know someone's interfering with the WiFi

 

[vesp3r]

there should be a button on your router, you have to press it when you try to connect so you can connect
If you suspect interference reset router to factory settings and ASAP change router password