I have solved my AB problems by using Google Chrome alongside Windows Edge. Sub-Categories appear every time now and the Print Box works fine. Windows Edge can be a bit of a pain, so I use it sparingly. Thought I would let you know.
I am keeping a look out for bad Ads just in case of virus.
Thank you for the update redman41. If you do encounter any troublesome adverts, please could you report them to us using the contact form, or a direct email.