Hacker login doesn't work on the website.

[TarunB-Git]

Clicking on hacker login from https://play.hackmit.org/
goes to https://my.hackmit.org/login?sso=https://play.hackmit.org/login

which returns
This site can’t be reached
my.hackmit.org’s DNS address could not be found. Diagnosing the problem.
DNS_PROBE_POSSIBLE