How do I get back into the Mac Standard version?

Unfortunately, you will have to start a new return. Once an upgrade is accepted you can't go back.

To create a new return, click on Tools (top right black bar) then on Return Manager.
Once in Return Manager, click the Create New Return Button. You should be prompted at that point with a product selection, click "Choose Standard".

Hope that helps.

I have the same problems....I did not upgrade to Premium and the page has Standard package as the item being sold!

I really would like to talk to someone in person!

says the code is invalid

i am having the same problem this is just a rip off goodbye turbo tax