shakpablo, did you have 2fa enabled? Did you make sure to have a unique password for SafeDice?
As far as i know safedice is a legit dice site.
Your account probably got compromised.
You never know, trust only services that exist long time. Its best way to be sure it have happy clients = it still exist 
Safedice did exist for a long time. But it really is having multiple issues of multiple users suggesting it to be a scam about to expose.
Most issues that I've came across were about SafeDice's admin being hard to reach at times and being late with refilling the hot wallets. The auto withdraw issue is the first time I've heard of. Have there other problems been reported lately? I only follow their official thread.
I'm not aware on their automatic withdraw but I have read lots of complaints about the site on which they do really experience issues and support or tickets responds for too long. As been said above it got been compromised, I don't think so as long you do see that your bitcoin is on the wallet or its shows pending withdrawal transaction on the history then theres nothing to worry.As far as i know safedice is a legit dice site.
Your account probably got compromised.
Safedice did exist for a long time. But it really is having multiple issues of multiple users suggesting it to be a scam about to expose.
Most issues that I've came across were about SafeDice's admin being hard to reach at times and being late with refilling the hot wallets. The auto withdraw issue is the first time I've heard of. Have there other problems been reported lately? I only follow their official thread.
There are too issues of deposits not being credited. Which is alarming in case of a casino. There is no support to answer and their silence connects the dots.