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bank does not approve of transactions related to cryptocurrency, as they carry the risk of generating income through illegal operations.
Please send us documentation which confirm what source of funds was invested to cryptocurrency and the statement from the platform where we can see that your funds were invested and then the cryptocurrency was sold out.
This is going to happen more and more often in my opinion. Money laundering and terrorism are the main problem for these banks.
If you have the proof that you bought it from an exchange, you are ok
It may take a few weeks or months but you will get your money.