Closing pledge manager
You can close the pledge manager and make it impossible to add new pledges in "Project settings" -> "Orders." To do so, change the status to "Closed."
Note: Closing pledge manager will make it impossible to edit pledges or add shipping details for the backers.
If you want to collect only shipping details from your backers and disable new pledges, leave the pledge manager status as "Open," switch the toggle next to "Accept new pledges" to "No" and "Shipping only" to yes.