Cambio de dominio, uno caducado y eliminado, por uno nuevo

[JxstErg1]

Hi and welcome to the forum! Please note that this is an English-speaking forum and so you must speak in English or at least provide an accurate translation of what you wrote. Since you didn’t do any of those I already translated it for you:

@Carlos.G.M

Hello, 15 days ago the domain that I had in this hosting expired and I changed the domain for a new one.
I changed the DNS in the new domain, associated them with the same hosting and deleted the old domain.
But now I find that although it seems that everything is well linked and points to the DNS to the new domain.
I can not access the website, it gives me a 404 error that the website does not exist, when the hosting says that everything is fine.
And I can not access WordPress because it says that my account does not exist, and there I had all my academy with the old domain name.

Please can someone help me and tell me how I can access the WordPress control of my new domain and regain control of my website?

You might need to move your WordPress website to the new domain’s htdocs folder if you added it on the same hosting account of the expired one by following this guide:

How to move a website to a different directory

Every website is linked to a certain htdocs directory on your account. But sometimes you need to move a website from one htdocs directory to another. This may be necessary if: You are moving to a different domain name (e.g. a free subdomain to a custom domain). You have recreated your domain name and it was assigned to a different directory. Fortunately, there is no need to rebuild your website from scratch. It’s not difficult to move your website from one directory to another. How to move a…

And then follow this guide to change your website URL to the new one:

Migrating WordPress – Advanced Administration Handbook | Developer.WordPress.org