Multisite question. (Unable to set up additional sites on fresh install)

Hi,
I have just created a fresh install of multisite however I am unable to create any new sites. I can go the the process of setting up a new site from the back end but when you click on that url it just shows the homepage of my host.
I think I have the wildcard set correcctly. I have attched a screenshot of the DNS.
I have also set up an additional superuser account if you would like me to PM the u/n and p/w so anybody is welcome to take a look below stairs.

This is set up as a subdomain setup as this was dictated by WP as I converted an existing wp install into multisite. (Can a subdomian setup be changed to a sub-directory setup?)

The main site is:-
learningshed.co.uk

however

fresh-site.learningshed.co.uk
or
test.learningshed.co.uk

just wont work.

Any suggestions warmly received.

Kindest
Andrew