Cisco WLC Debug AP not joining

Hi Rene,
I have an issue with an AP not joining the WLC, I have 3 AP’s on the WLC, one of them keeps drop the connection, when I check it by show cdp nei deta it has the correct IP address and it’s up on the switch, I can bring it back up by bouncing the port but it will come up for less than 3 minutes or so, please check the debug below on the WLC.
Note: the IP address and MAC address is hidden for privacy purposes.
Thanks in advance

Cisco Controller) >*spamReceiveTask: Jul 26 15:25:07.135: XX:XX:XX:XX:XX:XX Msg Timeout for 10.10.10.10:XXXXX, max retries: 5 (Cisco Controller) >*spamReceiveTask: Jul 26 15:28:18.559: XX:XX:XX:XX:XX:XX Echo Timer Expiry: Missing Echo from AP XX:XX:XX:XX:XX:XX, Closing dtls Connection. *spamReceiveTask: Jul 26 15:28:18.560: XX:XX:XX:XX:XX:XX Incorrect message is being sent to AP :10:10:10:10 (XXXXX) by Controller: !@.12.12.12 (XXXX) Not posting onto message queue *spamReceiveTask: Jul 26 15:28:18.560: XX:XX:XX:XX:XX:XX Unable to delete all station message to 10.10.10.10:XXXXX *spamReceiveTask: Jul 26 15:29:28.624: YY:YY:YY:YY:YY:YY DTLS connection was closed