Infinite scroll

Hi,

Switched from classic theme to Seller theme. Infinite scroll is gone on archive pages. There is an ugly navigation at the end of pages :) How can I set it back to infinite scroll? Couldn't find that options on admin panel. (I checked "Smooth scroll" on Customization > General setting, but it didn't work.)

Secondly, where can I translate "Read more" link in long posts?

Thanks.