Responsive/fixed offset for all devices + Auto. remove from certain categories

Hi. I’m using ur great plugin for my site https://www.theturbantimes.com, for all posts currently – but I have two issues that I hope u can help me w:

Post example with the progress bar in function: https://www.theturbantimes.com/2018/08/20/free-women-writers-building-a-sisterhood-in-afghanistan/

1) As you can see via above example, I have a sticky menubar following when scrolling down posts. This has a black lower border line; I wanted the progress bar (which shows only the foreground) to overlap with my theme’s sticky menu bar’s lower black border. On desktop, I chose in offset settings: “44”. On my MacBook, the progress bar and the sticky menu border matches perfectly. This is not the case with other computer devices though. I wanted to do the same for touch devices, but on iPhones, iPads, and other touch devices, it’s placed differently and therefore doesn’t follow my sticky menu bar’s border line like I wanted it to (I therefore currently chose offset “0” for touch, until/if this can be “fixed”). Is there a way I can add a responsive/fixed offset, so the progress bar follows/overlaps with my theme’s sticky menubar’s bottom black line exactly, on all devices? Hope this makes sense.

2) My last issue: Is there a way I can ‘permanently’ set the progress bar to now show in certain specific post categories?

The page I need help with: [log in to see the link]