There is some issue with non-alphanumerics in SSID, passwords and of course the same old area of hidden SSID to cover.

There are more reasons for this to fail such as the WiFi router is over 20 feet away (the Ambassador uses 25, I'm using 20 for now.)

WPA2 has at least two variations and a third most don't use so AES, TKIP and another so try those two and be sure your router allows this device. Some folk used MAC filtering and that's a dead end.

One last issue. What channel is the router on? Why do I ask? Read;threadListing