I've setup the multisite on a fresh installation of WordPress.
Then I created some other websites, so, in the end, I have something like this
I have then installed an SSL digital certificate, so I changed the URLs of the websites to match the HTTPS scheme:
To change the scheme I gone to
Sites > All Sites, then clicked on each site and in tab "Information" (the first one) I simply changed the scheme and saved.
The only site left without the
https is http://example.com: for this, in fact, I have cannot change the URL.
If I go to
Sites > All Sites and click on it, in fact, in the first tab "Information" the URL is not editable and is in the form http://example.com, without the https scheme.
How can I change it?
I'd like to change it now, before I start to install plugins and write articles.