Funny thing is that after I tried more than a dozen times, generating a dozen APIs at Binance, TurboTax was finally able to extract the 1099.
To be clear: I did NOT refresh my cache, did NOT set my browser to allow cookies and did NOT upgrade anything 'to the latest version'. All I did was I kept doing basically the same thing over and over again until the last attempt - and it was going to be the last one - was successful.
By the way, the error message seems to be indicating that Binance was rejecting TurboTax attempt at authentication. So it's not clear if TurboTax was sending wrong credentials or Binance was unwilling to accept the right ones.
