operating 9 AP230 in a small high school, broadcasting two ssid's (one for staff and one for student/guests). Security is WPA/WPA2 PSK. We are experiencing significant problems connecting a variety of devices (Windows 7 and 8, Macs, chromebooks, phones, tablets) to the wireless network (predominately for the student ssid, but occasionally on both). Some devices connect intermittently and some have never connected. Any suggestions?