they said before:"For the past 48-72 hours, the bitcoin network has been undergoing a large scale transaction malleability denial-of-service attack. All bitcoin transactions are affected.

Our technical team is working on a resolution, specific to Cloudbet users. Your funds at Cloudbet are safe, and you will be able to withdraw in full once we have resolved the issue. No action is required by any Cloudbet users. We will keep you posted as we make progress."

So juts be patient, I think they pause instant withdrawals because of this attack.