That did not work for me.  My down arrow did not take me there.  The tab key did, but after I hit enter and continue, I get the same message: "Documents not available until February 2021."   Other thoughts anyone?

Sorry ... importing for the 2019 returns has closed once the efiling option closed as of 10/15/20.

No corona virus extension?  Bummer...  Lot's of manual inputting.  My W-2 data importe4d without incident.  

Where items are imported are different ... the employer's site may still be active but broker's usually shut down early ... take it up with them since TT has no control over what they do.

How to enter a summary in lieu of individual transactions

Your brokerage statements should include a summary of your transactions, grouped by sales category, for example "Box A short-term covered" or "Box D long-term covered". You'll enter the summary info instead of each individual transaction.

1. Open your return in TurboTax Online (if it's not already open) and search for stock sales in the upper-right corner.
2. Click or tap the "Jump to" link in the search results.
3. Answer Yes to both Did you sell any investments? and Did you get a 1099-B?
   • If you land on Here's the investment sales info we have so far, select Add More Sales. Then answer Yes to Did you get a 1099-B?
4. On the Choose Your Bank or Brokerage import screen, select I'll type it in myself.
5. Select or enter your brokerage on the next screen and continue.
6. On the following screen (Tell us about...) select the second option, I'll enter a summary.
7. On the same screen, enter the total proceeds (sales) and cost basis, along with the sales category. Refer to your 1099-B for the amounts and category. When finished, select Done.
8. Follow the onscreen instructions to enter additional sales or to view a summary.

When you are done entering all your sales transactions, you'll eventually come to the Here's the investment sales info we have so far screen. Here you can edit, delete, or enter more sales.