Right side bar is missing

I have made some changes in the Editor, I was trying to erase the Events list in the right side bar of my home page and replace it with a sign up form, but now I have no right side bars throughout my entire site. And I still have the events list in the wrong place, which I can’t seem to get rid of. I am using Accesslite theme, and my website is https://www.raelenefewerbartlett.com.