Files vs. Workspaces

I clicked on the sidebar of an open .pdf file which said acrobat.com, learn more.  I was taken to a page where I opened an acrobat account and stored some files in Workspaces.  I was then reading about files.acrobat.com and not realizing it, I then had another separate account there.  I just wanted all my .pdf's in one place and now whenever I go to click on "save" while reading an open .pdf on my pc, it takes me to files.acrobat.com, not the workspaces where everything else is.  How do I get that to go directly to Workspaces instead of Files?