I love the software. I have been using it since 2017. I use it exclusively for Green belt training and many people have bought additional licenses due to the ease of use and graphing capability. My only gripe is that when I went to order an upgrade to my 2018 license, your customer service had a misstep and had overwritten my license. Apparently someone in my organization orders 21 licenses and gave my email address, this should have been a red flag right away. Your organization overwrote my 2018 license with a 2023 license which I did not have or pay for. So since they could not follow the line or ownership or find the purchase information I could only upgrade by either buying a new license or upgrading all 21 licenses. After arguing with Ryan in Customer service for a week, I decided to just buy a new license.