Customization of decline messages on recurring would cater to other business types, Non-profits for example.
We understand there are different use cases for your businesses and sometimes that means having the ability to customize what is automatically sent to your customers on your behalf.
Decline notifications were one of those you asked for. If you don't want your customers to see these messages simply go to Settings, click on the Invoice tile, across the top select Recurring. Here you will see the first option available is for decline messages. It is defaulted to Yes, however, you can change that at any time to No and it will immediately stop sending them to your recurring customers.
Check out the image below for more information on where to find this new setting!