We’re updating the theme currently & it’ll be released by Saturday till then wait for it so that you’ll have bug less theme. And about making theme look like the demo did you installed the demo with the theme so that it look exactly like our demo. Which version of the homepage actually you want? Please tell us from the below link:
About making the fields required or not it’s doable via changing the code in tpl-ads-form.php file
About the section that you want to hide this can also be hide from tpl-ads-form.php file. Wait for the update to come after that you should change what you need.