SOLVED! I just solved it!! The case is that my first camera worked well but I bought another one and tried to connect the new device. It didnt work like in the video above. Than I deleted my working camera and tried to reconnect it immediately again. It didnt work either. So I did a little of thinking. Yes of course, recently i messed something with my router security! So I went to my router wireless security ( I use WPA2-PSK) and changed encription from EAS to TKIP. And gues what? Both of my cameras are now connected and working!
sir reset mo na lang ulit. kasama kasi sa prompt yung pag change ng password. Saka base sa experience ko wag gagamit ng special characters. Alpha Numeric lang