An Update:

So the other domain is now offline as well

It seems the Tornado.cash community has moved onto another and doing things below the radar. According to their community websites (Telegram and tornadocash.social) tornado.ws is the new domain name which they claim is now being maintained by the community.

https://docs.tornado.ws/general/guides/post-censorship/

Official community git ---> https://git.tornado.ws/tornadocash