I wish I knew how to do this. There’s Mac software I bought 10 years ago and found myself using it again today, but is buggy. The developer released a new major

I wish I knew how to do this. There’s Mac software I bought 10 years ago and found myself using it again today, but is buggy. The developer released a new major version in the meanwhile and then retired it due to low sales. I contacted him to sell me a license but he refused categorically, telling me I “should have bought it when it was being sold.” Now I find myself using a buggy version and hoping I’d get around to cracking the new version myself. Heck I’d pay to get it cracked.