Today, I note that the webpage changed from "This site has been suspended". However, I did nothing.
Now, when I type my domain name on the browser, it is redirecting to another domain/site of mine hosted in the same panel/server.
I use CloudFlare. My other domains are working well.
Then, I did what you said above.
In the terminal, I saw that some fields were empties (alias, proxy, etc). I filled them with www., default, etc and deleted FTP_PATH=' ' via SSH to be similar to the others. Then, the added data appeared in the panel.
However, the website issue of redirecting persists.