Problems with footer - after editing in wp plugin the footer is messed up

Hello

I have updated my web page with a new version built with nicepage (www.projectn.hr).
At first, i was trying to make a contact form in the footer but it wouldn t work.

So, I moved the contact form but every time i try editing sometghing with the editor, the footers first two columns disapear and the third one is moved up. Can u please check what is going on?

Kind regads
Nenad