Footer and sidebar blending together

I’m using the theme Respo. It’s supposed to look like this (well, with some mods, but something like this):
https://wpdemo.themnific.com/pre/02/

And it did. Everything was working fine. And then all of a sudden the social bar at the buttom doesn’t load anymore. This makes the sidebar and the footer blending together in the sidebar and everything is tremendously messed up. The client tells me that she was just adding some adds to the sidebar. I removed those and everything was fine. But now it’s all messed up again. I tried the following:
– Deleting the last three posts
– removing all widgets
– disabling all plugins

Please help!