Crypto Withdrawal with Blockchain

I recently made a withdrawal from my Bookmaker account into my Blockchain account (where I then typically move it into my Coinbase account).  I have done this routine a dozen times over the past few years without issue.  This past withdrawal was relatively small ($5k), but when I submitted my send request from Blockchain to move my funds to Coinbase the funds did not go through and when I inquired about it, I was told that my account is currently suspended and Blockchain sent me an email requesting me "to pass a routine source of funds & wealth check".  

Specifically asking for:

• Proof of source of funds of the crypto deposited into your Blockchain.com account in the form of crypto exchange statements, bank statements, invoices, etc. in PDF format. Please provide both the source of the cryptocurrencies in statements for the crypto exchange where they were purchased and statements for the payment method you used to purchase those cryptocurrencies.

Have any of you had to address this with your crypto withdrawals?  And, if so, did you claim is was from sports gambling?  I'm not exactly sure if they are able to hold those funds and not release them or not?

Appreciate any insights or advice.  

I can't answer your question but thought I would share what happened to me. I used Coinbase for years to buy bitcoin. I would buy from coinbase then send to blockchain and then to sportsbook. Withdrawals were in reverse order. I went to buy bitcoin from coinbase one day and got a pop up message that said your account has been locked due to suspicious activity. I was pissed! Luckily for me I didn't have any money in my coinbase account so I didn't have to worry about trying to contact them about holding my funds ransom. I'm looking into using Gemini or Kraken now. Seems like not many people post in this forum. I would go post this same question over on SBRForum under sportsbook and the industry forum.  There is more traffic over there and maybe someone can answer your question and be willing to help.

I stopped using blockchain.  I use a different crypto wallet for my go between, with my sportsbook and coinbase.  I had a issue with blockchain, where I couldn't transfer bitcoin to my sportsbook from blockchain.  Not sure what the deal was, but once I found me another wallet, i've had no issues.

go right from coinbase to sportsbook

and same thing when withdraw

very simple

@ABEFORUS4444

 you don't use a wallet ??? their site says to use a wallet

@ABEFORUS4444

 abe, do you use a wallet..i'm gonna attempt to deposit without one...i know someone that doesn't use one for stake , com or something like that...but i'd rather go with bookmaker