Theme blank ?

Hi,

I just bought a 50$ theme off this website: https://aiweb.net
It worked well the first time but once i tried adding plugins and doing ftp stuff to make my theme look nicer (favicon,logo) my theme stopped working.
Here is my website: https://www.memesquebecois.com
It’s supposed to be a picture website but as you can see there is nothing.

What should i do ?!

ps: i tried re uploading the theme many times as well as deleting my plugins…