The desktop software will only import 1099-Bs or .TXF files. Any transactions not on an importable 1099-B or .TXF file have to be manually entered into the desktop software. The entry is exactly the same in both versions but the Online software allows the import or upload of CSV files for trading transactions. If you have rewards, those are reported as income, but not in the investment area with all of the trading transactions. Airdrops, along with promos and staking rewards, only become taxable once the taxpayer "acquires the ability to transfer, sell, exchange, or otherwise dispose of the cryptocurrency." To enter these (in either version), see this FAQ.
For trading transactions not on a 1099-B, they have to be manually entered into the desktop software. If you have a CSV file with lots of transactions you do not want to manually enter, you can use the online software to do that part and then finish your return in the desktop software. If you are interested in that approach, please see these full instructions. I have used these instructions and they do work. It works really well if you transfer in your 2020 tax file to the online software before uploading your CSV. That way, once you are done, the 2021 tax file that you open with the desktop software includes any carryovers from your 2020 tax return.
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