Did you install the printer software and tested that it works first? Sounds like something else else is going one and why would it say not secure for? That sounds like that would come from a security program.

My printer is not out of the box. It worked just fine with Google Chrome. I opted to remove Google Chrome, but now I regret the decision. It seems that after two weeks with Firefox, it has decided my printer no longer exists. I will look for the software that came with the printer and see if loading it will help.