Hi Mate, these are Pages, so find the pages with those titles and change the titles and text. If you want to change the image then look at the Featured Image in the Page, remove it and upload a new featured image. Job done.
Figured it out, seems I had to create new pages & attach those pages in customize site area under Homepage boxes. Thanks Interceptor you pointed me in the right direction.
Theme Options/Footer:
if “Footer top first column testimonial” is empty, the text color is same, as default.
It’s not good idea, if “Footer top” has another colour.
There is more inaccuracy in this section …