eladmarmor
I can access it now
1 - For the 'glitch', it due to your custom style in template as if you assign that megafilter page to 'Protostar' template or the default style of T4 Blank template, the filter will work fine , there is no 'glitch' there.
2 - You can go to megafilter in backend >> Page Options and drap&drop elements you want to display: