It's now working. The problem was the Frequency Band for the Wireless network. It was set to "2.4 and 5GHz". When I set it to 2.4GHz only, it's working perfect.
It's now working. The problem was the Frequency Band for the Wireless network. It was set to "2.4 and 5GHz". When I set it to 2.4GHz only, it's working perfect.