Laser moves, laser does't fire

$I enter said ok That’s all@
Just to make sure it wasn’t a 1 or lower case i , same result
screenshot attached

T2laser trial< I don’t want to pay for anything till Know It’s what I need (Home projects lol)
The web page Says it uses Benbox, I’ jst having a hard time Figuring out which is the Right button with All the Advertising Around