I can understand they are a business trying to make money so they come out with new software, yearly, with new features. I would be glad to pay for new features. But I may not want new features!

They've never support their previous software version! So you pay for a product only to discover there is a bug in it and they don't fix it. You have to buy new software!

Charge for new features with new software, but at least support your old software so they work. No warranty with logten pro.