There was a fantastic teaching website (indianinitiative.org) I used to use for my students that had case studies for all levels of blood banking covering a bunch of different aspects.. transfusion reaction, abo discrepancy, antibody workup, HDN.  

It has been down for me in the US with a cloudflare error - web server down for about 6 months now.

This makes me very sad because I did not save all those case studies as pdf when I had the chance    Has anyone here used that site or know if it has been relocated to another address? Google has no info

There seems to be very little info about the site.  It's a private registration, so you can't get contact info.  It's still registered with GoDaddy until next year.  https://www.godaddy.com/whois/results.aspx?itc=dlp_domain_whois&domain=https%3A%2F%2Findianinitiative.org%2F

Lots of sites don't survive.  Social media took a massive toll on small sites.  Software and webserver costs are significant.