Hoping I've missed something stupid.
I have a multisite setup that I've moved from a development server using subfolders to the live server that I need to use subdomains.
I have setup the wildcard subdomain in cPanel, updated the DB accordingly and changed the required values in wp-config.
This is all working fine, admin is all good, home pages of each site is fine and CSS all sweet. Click on a link and it drops the subdomain and returns back to the main site.
I turn off pretty permalinks and sites work like a well oiled machine.
.htaccess is as per what the network settings state they should be.
What am I missing?