JJ sploit don't works

jj sploit makes my roblox crash.

Every single time I paste script on lua or press any button except for run speed, roblox tab just close.

Sometimes it says make sure to install visual c++ but i'd already installed it.

Lua code run somethimes works but a few seconds later, roblox tab closed again.

My firewalls (and anti virus/vaccine) are completely off, and even I turned on VPN because jj sploit said try turn on VPN. 

What is wrong with me?