I Don’t understand why, but someone might have passed it.
By using any WordPress Multisite mapping plugin, it always redirects the domain mapped to the root site, never to the subdomain related to the mapped domain.
Does Anyone know why I can’t map domains?
When using version 3 this also no longer worked, I had to add the domain to Nginx.conf
Just so the mapping worked, today in version 4 does not want to work or the nginx.conf you are using is the wrong.