Could you confirm below details.
1- How many v/SZs you have in this cluster?
2- Is it a single interface setup or three (check this using "show interface" command)?
2- What is the vSZ and AP firmware version?
3- WLAN type, encryption type and authentication type?
4- If authentication server is a radius server, make sure all vSZ nodes IPs are added to radius client in the radius server.
Syamantak Omer | Community moderator | Sr.Staff TSE | CWNA | CCNA | RASZA | RICXI