Kyocera KR1 manual By default the Ddns is Disabled

Tools > DDNS

DDNS-	To use the Dynamic Domain Name Server update the client built into the router, click Enabled.
	By default the DDNS is Disabled.
Server Address- Choose your DDNS provider from the drop down menu.
Host Name-	Enter the Host Name that you registered with your DDNS service provider.
User Name-	Enter the User Name for your DDNS account.
Password-	Enter the Password for your DDNS account.

30 Kyocera KR1 Mobile Router User Guide