Try other changes, restore original file and try next changes, let me know if you have problems with it. This solution is more flexible and it will work without hardcoding anyghing. when you have only one active plan it will remove unnecessary steps automatically

1. includes/controllers/add_listing.inc.php almost end of file ~1100 line

PHP Code:
Only registered members can view the code. 
2. same file (add_listing.inc.php) ~50 line

PHP Code:
Only registered members can view the code. 
3. and final change template/tpl/blocks/category_level.tpl


find code and replace with code below

Code:
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