I also for the past few weeks have been unable to get turbotax to accept my tax API key from Binance.US. I have tried deleting and creating new API keys several times and none of them go. I am wondering if there is a limit to the number of trades/transactions that turbotax can accept and upload... I have over 70,000. I don't feel I should have to pay $1000 to places like cointracker or koinly to calculate profit numbers for me to put into turbotax. I have also downloaded my .CSV file directly from binance.us to import to turbotax that way but none of the column titles match up so turbotax won't accept the .CSV file. So frustrating. Help please. Thanks.
