Hi home page to make more than 24 the number of advertisements what you need to do 30 want to do.
We limit the number of featured properties max at 24 so if you want to increase the max you need to edit the file.
Go to tonjoo page builder plugin folder and find form-library.php file. It is located at: tonjoo-page-builder/inc/form-library.php then go to line 154.
Edit that number 24 to any number you want.