website frontpage broken after theme update

Hi,

After the last theme update the frontpage of my website http://www.catstyecam.nl is broken.
Issues are that the top menu has moved from top to left side. Also the blocks and posts widgets have changed. Size and layout is broken. Things are now shown underneath each other instead to the original layout next to each other.
Also the footer has changed in size and layout and the menu seems to be repeated in the footer as well.

Could you please inform me about a solution?
Corine van Kapel