Power instability is one of the common causes for Auto rebooting

• Please replace the ethernet cable.
• Please replace Power over Ethernet injector and power adapter if any

Also try

• Reset the AP to factory default and reconfigure the AP.
• If in bridge mode, change to the dynamic bridge, i.e. one AP in AP mode and another AP in station mode.

If none of the above resolves the issue or if you are unable to perform these tests please open a ticket here and our support team will get back to you with further instruction.