MacBook Wi-Fi can't connect on Connectify: invalid password
Lets try to reset your Macs settings.

            Go to System Preferences &gt; Network.
            Click the Wi-Fi connection.
            Click the Advanced... button on the bottom right.
            Click the Wi-Fi tab.
            Under Preferred Networks, select your wireless network.
            Click the - (delete) button.
            Turn off your Wi-Fi connection.
            Turn it back on.
            Select and login to your wireless network. This will re-save your connection under Preferred Networks.
            Close your laptop and reopen it to test whether it worked.


Next would be to try connecting manually using your Terminal (located in the Utility Folder.

Copy following in to your Termial:

To find the Network

/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport scan


To Connect

networksetup -setairportnetwork en0 WIFI_SSID_I_WANT_TO_JOIN WIFI_PASSWORD


Replace the SSID and Password with your data.