Yes you are able to disable/enable DHCP following this instruction
1. Open a web browser and go to http://latticerouter.local
2. Login to Amber Router (default password is admin1234).
3. Click LAN on the left under Network. You can enable or disable DHCP here. If DHCP is enabled, you can also set the starting and ending IP addresses, primary DNS and gateway IP addresses, and lease time.