I have an app that I may no longer be able to provide the service for, so I am considering options for sunsetting. Ideally, I would like to stop new sign ups ASAP and allow existing users to keep renewing until 2/28/2020. That will give me plenty of time to notify existing merchants that the app will no longer be available.
If I unpublish the app and have no published versions, will that prevent new merchants from signing up?
When I am ready to block access to my app, is there anything I have to do in order to stop billing for existing users?
Or, is it just that once I unpublish, even existing users won't be able to renew for the next month?
If anyone has experience with this, please provide as much detail as possible - I don't want to cause any issues with live merchants by experimenting with the options.
Thanks in advance!