Yo gizzig. I just messed up another withdrawal and came here to check if the hot wallet was empty but then I realized that I made a mistake. It's very easy to mess up XMR withdrawals on SafeDice and it's never obvious what you missed so I made this checklist to help myself. I think it will help others here as well.

SD withdraw checklist
1.Check you have enough xmr balance. Investors need to divest first.
2.Use only basic standard address. No integrated addresses.
3.Payment ID is mandatory. Use a 64 char hex string. If sending to a wallet you control, use this https://www.grc.com/passwords.htm
4.2FA is not optional if you have it set up. Check the time on 2fa device(phone) is correct.
5.If it still fails try a lower amount. The hot wallet may be low or empty. Check the BCT thread.