WPA key wrong Ps3, I despair, what to do?

Today everything was still good I watched videos, and suddenly the connection to the PS3 went away, everything works fine on my cell phone and on my laptop, I have entered the password correctly over 1000 times, it always says "WLAN key is wrong, I do not understand why, have not changed a password or something, have reinstalled the PS3 and still the same is then displayed and I always give the password correctly…

Hi

Look in the router if it is not blocking your PS3 connection.

Is unfortunately different from router to router so I can't tell you how to look it up but you should find it on the Internet