Club 2130 Website structure issue after move to FTH 4

Hello
I am very excited to learn about FreeToastHoast 4 but am currently having a major homepage issue ( see attached). The layout is all wrong. I think it may be because of my custom code ive had in there from before the move (Upcoming Club Meetings list) but i dont know how to access that block to remove it. 

Website: https://mounties.toastmastersclubs.org

Any help would be deeply appreciated.