How to get rid of Nginx from my domain.

Hi People,

I had installed nginx to a droplet with attached to my domain. But then I deleted that droplet.

And I created new droplet and everything works fine EXCEPT when I typed www.mydomain.com, it redirected to “Welcome to nginx” page instead of my actual page.

However, if I typed https://mydomain.com, http://mydomain.com, mydomain.com. they all direct to my actual page.

Is there any way to solve this?

Thank you so much.