I'm trying to download a paystub from work but it keep saying that I need a password for a document

Download my check stubs from Labor Finder's Albany, Ga

Is that when you are installing the software, or when you try to open the PDF?

If during install, that is your Mac asking for your computer password to prove you have permission

Otherwise, Acrobat and the Cloud service can't open a password protected PDF if you don't have that password... which you get from work