CRS dataset isn’t rich enough to determine tax liabilities. For example, it will only report end balance at reporting period and not the transactions. Mostly it is used to determine where the tax residency of the account holder is.
Most likely this. I submitted my trading account with 1mil+ and they refused. But they did ask me to submit document again - which I did with savings account. I am surprised they didn’t give you the chance to resubmit docs.
