Moving between scanned Pdfs and downloading

Feel like I am being an idiot as I am trying to move between sequential pages of a website with scanned documents and downloading them but in macro terms can't get beyond the page movement; very grateful for any assistance

Can you give us the URL?
Which browser are you using?
Please use Chrome or Safari, not Firefox

Hi Jonathon
I really appreciate the offer of help. Do you mind if I send details through a personal email as it involves passwords etc?

My email is

With thanks