Pop-up to save 'pw' is blocking selections when filling out online forms, like ADP, etc

When I'm filling out online forms for clients I constantly get pop-ups that ask me if I want to save into 1pw, for all kinds of things- addresses, phone numbers, other account info. Often times the pop-ups are blocking me from being able to see or select options in dropdown menus, some of which have to be selected and can't just be entered. I'm having to click on things I can't even see to see if the correct information populates. 
How do I prevent all these pop-ups and slideouts asking me to save, or sign into other linked applications that are irrelevant or that I don't use?