PDF Password Protection

I am having great difficulty with resetting the permissions for document/PDF security. I created an "open" and "permission" password, which I was a diligent steward to write it down and tested it when I first created them about a month ago. Now, five weeks later, the passwords won't work. They worked before letting me in but now they don't seem to work. I never changed it. I have the documents saved elsewhere but the problem I am experiencing now is that whatever document I bring over from Word or create, it is requiring these passwords when I go in to edit.
I've done my search homework around the community here on Adobe but no one seems to give a solution. I understand that passwords may not be retrievable for documents  but I refuse to believe that Adobe does not provide a way to change the security settings from our account settings for PDF documents especially for paying customers. 

There's got to be a way!
I'm desperate here.
Help! 😞