1) Please refer the below link to purchase our demo images
2) kindly navigate to Pages => Insurance => Image caption Settings => Image URL where you can update the images that you have purchased images using the above link.
Please refer: https://prnt.sc/OIjkTE_gLCIW
3) Please refer to the screenshot link for the size of the image
4) Footer : http://recordit.co/YENE6RxzDJ