Hello,
Take our apologies for the delay in answering. We have a large number of requests during these days.
It looks like you have solved it, because here is what we can see:
1/ Filters are ok for desktop and mobile
2/ Products have a grey background on desktop and mobile
http://prntscr.com/26wqssf
3/ Footer is ok
http://prntscr.com/26wqtr6
4/ Bottom footer is ok
http://prntscr.com/26wqu22
Regards