"SonicPoint unexpected reboot. Please check whether input power is adequate and Ethernet connection is secured. (ACe/ACi/N2/NDR requires 802.3at PoE+)"
Based on the information from the logs, check if:
The SonicPoint is in the correct zone. The Sonicpoints must be connected physically (directly or using a hub or switch) to a Wireless zone (WLAN zone) on the Sonicwall.
The power cable and/or the AC adapter is not damaged. Try with different power sources (AC adapter*, Injectors, and/or PoE switch**).
There's an intermediate device (hub, switch, etc.), between the SonicPoints and Sonicwall. Plug a Sonicpoint directly to the Sonicwall, to bypass any L2/L3 devices in between the device and the firewall.