can't connect to my wifi

just got mbp 13 , not allow me connect wifi. use normal wep encryption , have never had problem connecting devices until today. if remove routers password works fine, once re add password mbp no longer connects. problem here? network settings in network status yellow light when trying connect

 

try restart router, reset wifi settings. if still can't connect, go , take if mac's mac address listed in router admin page.

 

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