First of all, please go to
FAQ (http://www.planetddns.com/index.php/faq) for how to register a free account.
To select Advanced Setup > DDNS
Step 1. Select Planet DDNS
Step 2. Type the User Name for your DDNS account.
Step 3. Type the Password for your DDNS account.
http://www.planetddns.com
User Manual of WDRT-1200AC
Appendix B: PLANET DDNS
to register a Planet DDNS account, and refer to the
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