Networking – Chromecast setup doesn’t show WiFi network

I've just received my Chromecast, just started to install. But when I need to select my WiFi network, it isn't there.. When I enable my hotspot of my Android phone, it's begin displayed.. (But yeah, I don't want to use my 3G to stream movies haha)

My router is a Cisco EPC3925.

I've done the following things:

• Enabled uPnP
• Searched for the AP isolation option, found nowhere.
• Tried different security modes and encryption's (Normally WPA2-Personal, TKIP + AES).
• 2,4GHz networking

(If you need to know any other item/configuration thing, please let me know!)

Currently I don't have any other router that I can try with (only the hotspot). Also, different other WiFi networks are displayed, so I don't think that it has something with my Chromecast.

Thanks,