It worked the last time I tested it and have confirmation from other users that it worked as recently as 4 days ago.

I need more detail than "can't use it". What's wrong? Can you log in? can you place bets? does it crash? Does it show any error message?

I don't own any of these sites, I don't work for them or on them. I generally find out about issues with sites when people report issues. It's possible that the site has had an update the breaks DiceBot, or it is also possible that you just tried to log in too many times and activated a catpcha on your account/IP and need to wait a day before attempting to log in using the bot again.