Thanks for contacting Cisco.
Please upgrade the firmware to 1.2.1.14, link below.
https://software.cisco.com/download/release.html?mdfid=284005929&softwareid=282465789&release=1.2.1.14&relind=AVAILABLE&rellifecycle=&reltype=latest
If the issue continues, you should reset the device to factory defaults and manually reconfigure the device.
Best Regards,