A lack of sympathy would be appropriate if the developer was having problems with the app quality, reliability, performance, etc. then I think we might all be

A lack of sympathy would be appropriate if the developer was having problems with the app quality, reliability, performance, etc. then I think we might all be with you that you don't deserve sympathy for your app sucking because you took technical shortcuts. But for a the vendor of development tools to start contacting my clients without my permission? That's ridiculous for them to even communicate with my clients, let alone try to get money.