Newsletter sign-up form appearing on every page in error

Hello,

I'm not sure if this is a weird glitch but I have somehow managed to add a newsletter sign-up section to the bottom of every page on my website, which I don't want. This happened when I was trying to add the section on my blog posts, which I was going to do individually. When I've tried to delete the sections I don't want they re-appear. On my homepage there's currently two showing, following right after one another. I managed to add the sections on a couple of pages before without an issue, so I'm not sure how I've managed this or why it's happening.

Can anyone shed any light on it?

https://bamboo-rabbit-99gt.squarespace.com/config/

pw: !(cX3Ly@$323cC(

@tuanphan ah that would explain it! Thank you!