Amend 2018 Tax Return

I have logged in and followed the instructions to download the 2018 amend taxed edition, I have clicked on all the parts and I still can not get my 2018 in tax.file, I only have the pdf. I have gone through all your sites and followed instructions to the T and nothing happens other than an error code, I go to the tab to try and fix and the page does not exist.  Please help!!!!