DDNS Service isn't working with

I can’t connect my website with My website use DDNS Service(it bundled with tp-link router). My experiment(in Pictures) shows that if queries, it will not respond. I’m use KT Corporation(In Korea) for ISP.

Neither does any other resolver. You need to fix your DNS setup. is very broken and noncompliant.

I’d encourage you to switch to a better dynamic DNS platform if you can.