Suffix for template

Hi, I recently noticed i cannot be able to add new suffix on the template after downloading the new quickstart package. When i use the older quickstart package i had it works but when i upgrade to joomla 3.7.2 then the functionality is not working anymore. I write the Id and the suffix but when i click on Add Rule nothing works. Please fix as i am stuck..

Hi,
Did you try to disable your cache plugins and clear your browser's cache? Because this issue should be fixed in latest template version. (Did you update your template?)