OK. Just in case someone else has this issue.
So, I had installed previously a the server panel (from adobe exchange), I think this might have been messing with the set up. I removed this and reinstalled eCart (6.1.2) to Dreamweaver 2018cc (18.2) and did so with DMXZone Extension Manager and all is now working as expected.
I do not know why the installation of the server panel from Adobe Exchange could do this, but removing it did the trick for me. Maybe it can do the same for someone else.