Purchased the PLUS benefit, but cannot access 2016 tax return.

I signed up for the PLUS Benefit a few weeks back to access my 2016 tax return. However, when I try to download this 2016 tax return, I get a reject asking me to upgrade to PLUS Benefit!! Which I cannot do again anyway, since this option is now greyed out in the upgrade page, and labeled as "my current product". Please advise how to proceed to download my 2016 tax return.