I did something different. So I deleted all two domains, my official domain and the new one. And I added my old domain as new domain and set it as default. And I have noticed it's created folder with the domain name. And I reinstalled the WordPress, but now I encounter a problem where WordPress...
I did it now and when I opened the domains director I see the new domain only I didn't see my old domain I attempted to create a folder with my old domain name but I don't think the website has realized it
I created the folder and reinstalled WordPress, as you told me. The installation was successful, and its contents and WordPress went to the new folder, but still, when I open my site, a 404 error appears.
I have deleted all the files from my website to start again from 0 but when I have installed WordPress and try to access to the admin panel I see error 404 and when I open the website main page I see 403