Hello!

No, I don't believe it was fixed by setting the width to 100px. 100px is way too small for your items to show properly.

I would set width to 240px, max-width to 300px and min-width to 200px.
That way, it will show properly on desktop AND mobile.
Add a gap between items so they don't look cramped by setting 'space between items' in the 'layout' tab.

If you don't see changes, it means your site is cached, probably in Cloudflare. When you set Cloudflare to development mode, it only stays in that mode for 3 or 4 hours max. It reverts to being cached after that time. So, if you make changes, you must change Cloudflare settings again.

No, the home page does not work properly as it is. The width still is set to 100px.

You cannot have 6 items in a row and expect it to show properly on mobile or even on tablet. That is why the extension is using flexbox to adapt the items on the page:
if room is missing, it takes the items lacking space to the next row.
That is also why you need min and max widths. So it adapts properly.

For the 'advice' homepage, use the same settings as suggested for the homepage and it will work properly.

If you want items in one row ALWAYS regardless of adaptability, I would suggest you try using the animation/pagination settings.

Ok, the advice page looks better, although you still need to add the space between items like suggested before.

If you applied the changes to the homepage as well and it does not look the same, you are still having caching issues.