I'm sorry this has been your experience. I am not sure why Nimble Kick specifically would break your project. Was Cakewalk Sonar causing crashes for you? Did it start happening after changing a specific setting in the plugin? Are you sure it's not something else in your project?
I've also just replied to your other thread.
If you would like to request a refund, please send an email to support@itch.io, they will be able to help you out.