Try to reset the password and then log in into your account. As holydarkness pointed out, you haven't entered the correct verification code.
How good of a friend is that online friend of yours? Some people are too fast to call strangers friends.
Let me give you an example of how such a scam could potentially work if your friend is part of the group of scammers.
1. Your "friend" gives you a tip.
2. He then asks you to give it back for whatever reason.
3. In the meantime, the casino blocks your account and doesn't allow you to send the money back.
4. Your friend pressures you to give him his money because he needs it.
5. Since you can't send back the tip, he might suggest you pay him from your personal wallet.
6. Eventually you give in and send him the $150 you owe him.
7. Your friend and the casino just made $150 from you.
That is what I initially thought, few years ago someone tried to scam me with an almost similar method, a stranger contacting me because he knew me from one TG group, asked my help to withdraw from a website and he'll pay me some percentage for the trouble. I knew right away he's a scammer but decided to see how far he'll go, so I made a disposable email, created an account with it, and he transferred the fund to my account through the tipping feature on the site so I can WD it for us. The catch was, in order to WD from that account, I had to deposit some amount of ETH.
Long story short, I toyed with him a little until he met his boiling point and stopped the chat. Pretty much sure the website was his because he asked me to transfer the fund back to his account and when I said I've did it, he knew I hadn't because he still can see the amount on my account.
What differentiate mine from OP's is that I need to deposit in order to WD while OP got his WD feature blocked.
This is why I bombarded him with questions yesterday. In the end, I decided to gave OP benefit of doubts and believing that his story is real and his friend is also a real close friend. [There are several other possible scenarios on my mind, but let's just table it] For this situation, best they can do is what I said on my previous post, for his friend to contact the platform and ask for reversal himself.
I'd really appreciate if OP can sbow us the screenshot of the error message saying his account is blocked, though.