1099-DA : Mailing A Paper Copy

[jtabc]

Why am I getting this message in TurboTax? 

Is it possible for me to attach the 1099-DA form directly in TurboTax so that it is e-filed? I really don't want to have to mail it in.

I already entered my cost bases alongside the proceeds using the "sales section totals". I don't understand why I also have to mail the form.

[JamesG1]

You are entering the IRS form 1099-DA or IRS form 8949 using the sales section totals method in TurboTax Desktop Premium. 

The IRS requires that the form be submitted them for review.  The form will be attached to an IRS form 8453 and mailed by the US Postal Service.

I do not know how many transactions are reported on your form.  At the screen Now, choose how  to enter your sales, instead of the sales section totals method, you may select the one-by-one method of reporting the transaction(s).  If using the one-by-one method method of reporting, you are not required to mail a form by the US Postal Service.

TurboTax Online Premium will allow the IRS form 1099-DA or IRS form 8949 to be uploaded into the software when using the sales section totals method.  The form does not have to be mailed by the US Postal Service.

[jtabc]

I have some follow up questions.

1. You mention TurboTax online premium can upload the form. I'm not using this. I'm using the Windows Desktop version of TurboTax Deluxe. Is the desktop program unable to do this?
2. I don't have many transactions listed on the 1099-DA form. The reason I used the sales section totals method is threefold:
   1. Firstly, the number of units I enter for the assets I sold gets automatically rounded down to zero when I attempt to enter them, and then I get an error saying the number of units must be greater than zero. I can round to 0.0001, but that number is wrong, it should be 0.00000872. I don't want to enter an incorrect number of units sold.
   2. The 1099-DA form lists "Various" for the acquisition dates for some lines. Whenever I type in "Various" into the Date Acquired Box 1d, it just resets to blank. Does TurboTax does not support this?
   3. The 1099-DA form already aggregated all of my stablecoin transactions, because I had hundreds of them. Please see my post here. Am I still expected to list each of these one-by-one, even when the 1099-DA form does not?

Would you please address question 1, and then all three sub-bullets of question 2 directly? I'm just trying to understand if I really need to mail it or not. Given question two subquestions 1 and 2, I'm assuming I will.