@Tusksoft
The link isn't dead, you just need to have access to the ASP Zero github repositoy, because it's private.
You can grant access to your github account by logging into the ASP Zero main website, clicking the account dropdown, and then going to github members and adding your github account there (assuming you have an active ASP Zero subscription.)
I've emailed twice in resent days asking for the Metronic 7.1.5 source, and have not recieved a response yet. This is really holding our team up.