Hi Steve / Richard,
Thanks very much for your replies, this helped me narrow down on the problem. I think I’ve found the missing link, looks like another person working on the site set up a Cloudflare free SSL certificate and joined it up in GoDaddy somehow. So it ‘should’ be working, I’ve just got to find out why WooCommerce doesn’t recognise it.
Steve, I can’t find a CPanel. I’m on a GoDaddy Managed WordPress hosting, I’ve just read that they don’t offer a CPanel as part of that. Is there another way I can check to see if there is a *crt file? Otherwise I can just try switching the URL as you’ve suggested and see if that works, would be nice if I could check the file somehow though.
Many thanks.