Failed authorization procedure. gitlab.example.co.uk (http-01): urn:acme:error:connection :: The server could not connect to the client to verify the domain :: Fetching http://gitlab.example.co.uk/.well-known/acme-challenge/arUuWGLPGjQRw333SPHMzzlNezA1Zitjw4a9BrTFJ7w: Timeout
the domain a record is pointing to the WAN and then points to the correct server we have it working on one of the gitlab installs. Just this one is not having it, I have added the test.txt and can access that.
There’s no publicly-visible A record at all for gitlab.nllashes.co.uk so far—so there’s no way for Let’s Encrypt to confirm that you’re the operator of that site.