1) if you have 2-factor authentication....not sure that works.....might have to turn it off.
2) Saw a few folks who had to change their password to aa simpler one, especially if it contains special characters beyond numbers and letters.
No other thoughts for the moment, but unless you have a lot of brokerage sales requiring the Form 1099-B/8949, any 1099-INT, 1099-DIV, and 1099-R forms are usually fairly simple to enter manually.