@David-TP seems like, I asked from the ISP to provide me a static ip, once they set it the ip has changed to (85...), the DDNS service has started to work. Thx

I am using Deco-X20 DSL with a simple tp link SFP converter (TP-Link MC220L) from fiber to the deco lan (WAN) port. I am using PPPOE with ISP credentials. I have activated DDNS service via Deco app...