The script will check whether you can use the Extension Repository and the Live Update. Depending on your system configuration, you can set up a new Contao installation with the web installer or validate an existing installation.
since none of that applies to Contao 4. Also I have added a note, that you cannot validate a Contao 4 installation (since you can still see the button in the screenshot).
I have removed
since none of that applies to Contao 4. Also I have added a note, that you cannot validate a Contao 4 installation (since you can still see the button in the screenshot).