I previously had my router configured to use DynDNS for DDNS. Due to the impending collapse of DynDNS services I opted to switch to TPLinkDNS and registered an address.  This address appears to be propigating as expected, and the configuration when I look spefically at DDNS looks fine; however, viewing the Advaced->Status page the DDNS section still has DynDNS as the active selection with Not Launching as the status.  

If I attempt to remove the DynDNS configuration client side validation errors are rendered for each empty field(user, password, domain) and input of empty is not accepted.