Some doubts and incidents

Hi, I have been very happy with the template for years, but I would like to solve some problems:

1. When I insert in a smartlist an image with description or caption, the smartlist does not show the rest of the text of the entry, only the image. When I remove the description or caption, it looks fine.

2. You told me that I can’t remove the numbers from the smartlist 6 (I hope you will fix this in the future), but how can I make the center with space to the right and not go under the button? Example: https://imgur.com/a/k7klga3

3. How can I make Twitter or Instagram embeds always centered in an entry and not left justified?

4. Is there an option to make the headers default to be centered and not left justified?

Thanks