Get your taxes done using TurboTax

It appears Turbo Tax is filing my return without the explanation to form 2210.  I have completed the explanation to form 2210 and refile but continuously gets rejected for no explanation.  After the last rejection I opened the program as was told the return had been fixed and to refile.  It was again rejected after 15 minutes with a note an explanation had to be attached to 2210.  Don't know how to get Turbo Tax to submit the explanation with the return.  Any thoughts?