Deleting the plugin is not possible

I installed the free version to have an idea about the usability and to see how it works, supposing the paid versions it would be adding only few more functionalities. Usability zero. Page campaign requires extra work to make it look nice. Deleting the plugin is not possible, the issue is in work in progres since months not being a priority: “Deletion failed: The form Donation Form with ID 624199 cannot be deleted because it is the default form for a campaign.”