ddns work, if you see the picture i attached but default link ip doesnt work when i disable every thing for remote access as you can see in perivous comment.
the way you just explained it is all reset and when every time this happened i have to reset the router as you send the link above and it is hard for me to travel at router location so
I have try same methord many time in the past and it is lot of travel to the router location.