https://www.speedrun.com/cof/resources download space macro and then it should be an auto hotkey file, open it and it should be turned on, you can check bottom right taskbar where apps show if its open, https://imgur.com/a/tgH5H4l , if its on if you hold spacebar it keeps spamming it on its own and thats it

edit: if it still doesn't work rebind jump to spacebar incase you binded it to scroll wheel, and if you can, bind scrollwheel to spacebar if your mouse has a program for that, if some stuff are easier with scrollwheel (if thats what your are doing rn)