@MortenHB the 3B model supports only 2.4Ghz Wifi networks, make sure you don't share a 5Ghz SSID on the router. Also, if the Wifi networks aren't separated/isolated through a firewall. Your problem seems purely related to the routersettings/restrictions.

@FlashFlood2864 That's good news. Your welcome. If you get any problems with your wifi connection in the near future, you can try changing the wifi channel in your Router's administration. Being on a wifi channel chosen by your Router is not always feasible and could decrease the wifi's signal if there are too many wifi network's using the same wifi channel. The Router might have a built-in wifi channel tester. :-)

@Otter22 The Wifi is not setup from Emulationstation, but via the RetroPie-Setup. You should have a WiFi menu entry in the RetroPie system in Emulationstation - just like it's described in the Docs.

Hi, did you get my email reply?

something seems off aobut Williamsmith007's reply, should it be flagged as spam?

My problem is fixed, just had to connect to wifi, get things fixed and i'm done! Thanks for da help!

Hi Try setting the clock first. I've had this before where the clock being out by more than about 15 minutes stops the wifi from connecting. Once it has connected once, it is fine on future reboots (even though the clock is reset to default at power on).