海康萤石云摄像头连接wifi失败

 ac WX3520H  Version 7.1.064, Release 5426P02    ap：WA5320H

海康萤石云摄像头连接无线网络，能正常用2个月左右，之后随机出现有的摄像头无法连接原来的wifi的情况，其他手机电脑等无线客户端可正常连接，新建一个服务模板，只是修改了ssid名称，就可以正常连接了，摄像头恢复出厂后重新连接之前的wifi时debug信息如下：

*Dec 10 13:10:04:929 2021 AC-WX3520H STAMGR/7/FSM: [APID: 276] [MAC: c051-7e7b-be99, BSSID: 943b-b05c-9831] Received deauthentication or disassociation request from client in Userauth state: Reason code=3. *Dec 10 13:10:04:929 2021 AC-WX3520H STAMGR/7/PktRcv: [APID: 276] [MAC: c051-7e7b-be99, BSSID: 943b-b05c-9831] Received deauthentication frame with the reason code 3 in Userauth state. *Dec 10 13:10:04:929 2021 AC-WX3520H STAMGR/7/Event: [APID: 276] [MAC: c051-7e7b-be99, BSSID: 943b-b05c-9831] Can't send delete mobile message to uplink device: Reached the end of the IOCTL tunnel. *Dec 10 13:10:04:929 2021 AC-WX3520H STAMGR/7/Event: [APID: 276] [MAC: c051-7e7b-be99, BSSID: 943b-b05c-9831] Sent delete mobile message to downlink device. *Dec 10 13:10:04:930 2021 AC-WX3520H STAMGR/7/Event: [APID: 276] [MAC: c051-7e7b-be99, BSSID: 943b-b05c-9831] Sent delete mobile message to downlink device successfully. *Dec 10 13:10:04:931 2021 AC-WX3520H STAMGR/7/FSM: [APID: 276] [MAC: c051-7e7b-be99, BSSID: 943b-b05c-9831] Changed the client's state from Userauth to Unauth. *Dec 10 13:10:04:936 2021 AC-WX3520H STAMGR/7/Event: [APID: 276] [MAC: c051-7e7b-be99, BSSID: 943b-b05c-9831] Downlink delete mobile message callback. 

请有经验的姿势工程师分析下原因在什么地方，谢谢！