Psp won't connect to my Wi-Fi? Psp slim?

I can't connected to my Wi-Fi for some reason
it finds my Wi-Fi but when i test connection it says "a connection error has occurred
a connection to the access point could not be established
check the security settings for the network and try again.
it can't be my router because i'm connected on my iphone and computer, please help

Change your psp

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