I'm using the one installed with the beta (Version: 126.96.36.1997) which looks like the latest, when comparing with the website.
I've now tried again today but from a different location/ISP and it found the server this time and I have the licence activated now
Now I'm curious if this was location/router/ISP related (even though I never had an issue like this) or if there was really a problem with the server during the weekend.
I'll check later tonight again, to be sure but at least, now I have the license working
Thanks Adrien and... hey, you guys had to use "something" and TBH I never had any issues with eLicenser before (lucky me uh?