Scan Essentials and SketchUp Pro perpetual license

I got a point cloud at work, the provider suggested Undet. It was ok for some stuff, but the trial ran out and management didnt want to pay $110 a month for something they felt was short term need. Since I use SU, I started looking around for software or plugins, I found scan essentials. The office still has a perpetual license for 2020 Pro. I download the trial thinking it was for scan essential only. but when the trial ended, naturally it brought me to subscriptions to get a license. I know it will work on pro because I was using it on pro during the trial

Is there an option to purchase scan essential alone or subscribe scan essential alone?
Or is the only way to access Scan Essential is by getting a studio subscription?