Maxis has just replaced my tplink router with a huawei router (LG8245X6-10). When i try to configure the DDNS on this new router, it keeps tell me "Service Not Available. Check the DNS Domain Service". I am not sure what could be the issue. But i've confirm that my username and password and domain name is correct. and the domain "smilespharmacy2.ddns.net" is pingable as well. Can someone enlighten me what needs to be checked or edit?

https://pictr.com/images/2022/02/12/Bo08Oq.md.png

i'm not sure on this. but the previous maxis router doesnt need to set port forward in order to setup the ddns. and also its not a private ip.else no point to setup ddns since it is already static? Please correct me if i'm wrong.