Step 1: Change DNS address in network settings.
Please change the default DNS address to the 2 addresses below:
Change DNS address in network settings
Step 2: Go to DDNS settings
After installing DDNS information on the device, go back to the hostname information management page, wait from 30 seconds to 5 minutes to check if the ip address has been updated or not.
If you don't see the updated IP address.
Successfully tested on Port (Default) recorder 34567 using GoodEye App, XmEye, vMeyesuper