Have you submitted your KYC by any chance? And how about your 11 XMR, are these still on your account? Many time this problem i've heard, it mostly ended with the user lose their money because they are impatient and can't withdraw it
The money is still on his account and once he finishes the KYC procedure he'll be able to withdraw it.
I'm a mod on duckdice , and would just like to say that for the past 1 year I've been a mod ( and 3 years a player ) there have only been 3-4 cases where a player had to go through KYC ( and for good reason ) . Players have withdrawn hundreds of thousands of $ in a single transaction without having to go through KYC.
We've even had a 10 btc faucet withdrawal a few months back without issues.
So a 11 Xmr withdrawal is not really anything big , regardless of Xmr's privacy settings , the KYC procedure required for this user was for valid reasons.