Featured Slider Option-Can't use Featured Page #

With Catch Responsive for the noted topic, with No of Slides=3, Featured Page #1, #2 and #3, drop down control boxes show only Home and Contact pages while I expect to see and select the pages, the posts or post featured image number that I want to show. Q1:How do I eliminate the "CT CatchThemes Image not found please etc..." Q2: How do I make Featured Content (showing CT sample) to showcase my posts' featured images and excerpts? Q3: Do I need more widgets?Thank you, Vlad at itinkiam.club