I just ran across this issue even today in 2020 (for tax year 2019). The software (desktop Home & Business edition in my case) refuses to print/save to PDF form 2210. If you export the whole return and choose to include all forms for your records, including worksheets, Form 2210 is still omitted, along with a few other forms like 6251. What's the point of exporting your tax return "to review or keep for your records" with "all calculation worksheets" if it omits some of the forms?
If you separately view Form 2210 from the "Forms" view, and try to print/save to PDF from there, you will only get the FIRST page of the form. Utterly baffling. How can bugs like this in financially critical software last so long. It's completely unacceptable.
