Slowing down the site

Hello,

When turning on Popup maker the site loads in 25 seconds as per GTmetrix https://www.dropbox.com/s/txj15k67454hv97/Screenshot%202020-10-27%20at%2002.04.19.png?dl=0

and when turning it off, it loads in 3.5 seconds…

https://www.dropbox.com/s/4yx9z2oq0jzxohn/Screenshot%202020-10-27%20at%2002.04.27.png?dl=0

in addition to this, there are continuous JS requests that do not stop in the background… https://www.dropbox.com/s/o6seuyupyeptyr8/Screenshot%202020-10-27%20at%2002.06.40.png?dl=0

I am not sure what is the reason for these requests?

Can anyone help?

The page I need help with: [log in to see the link]