Step 1: Create a DDNS account(username and password).
Step 2: Log into the router by typing the router IP on the address bar.
Step 3: Click on Tools and select Dynamic DNS from the left pannel.
Step 4: Put a check mark in the box next to Enable Dynamic DNS and select your Dynamic DNS server from the list.
Step 5: Type the dynamic dns host name you created in step 1.
Step 6: Type the username and password for your DNS account.
Step 7: Click on Save settings to apply the settings.
Step 8: Verify that your router is connected under Status.