Help finding Selectors

Try maybe something like:

Navigation Selector: .pagination
Next Selector: .alignleft a
Item Selector: .post

As for the content selector try:

Content Selector: .et_pb_blog_grid_wrapper
(or)
.et_pb_column
(or)
.et_pb_blog_grid

If that doesn’t work, try again with:
Next Selector: .pagination a:first

Otherwise I am out of ideas, I got this info by right-clicking that page, click inspect element and looking at your html for that page.