<...> but I can't check it now as I can't find a link to the ToS where it used to be on the main page.
The ToS link is right there on the front page, just below the "SIGN UP" button. Alternatively, you can also directly open the page using this link:
https://freebitco.in/tos/I also don't notice any information about restrictions for Singapore players. It's possible they were dealing with a DoS attack and had to limit access from specific regions through CloudFlare.