sertting Google Analytics up with Lightspeed

Hi,
I have set up google analytics on my lightspeed website, but it won't get any conversions. I can see how many people are realtime on my site, and in total. I can also see there acquisition.
I have called with Lightspeed if they know why this is happening, but they can't figure it out,.
How did you set this up in Google Analytics to make this work?