You can unenroll a customer from Auto Pay if you wish to. The subsequent invoices will show the "Enroll in Auto Pay" and "One Time Payment" tiles, and the customer can make one-time payments.
You can unenroll customers using one of the following methods.
#1 On the D-Tools Payments Setting page
Go to "Settings > D-Tools Payments > Payment Settings."
Click "Manage" under Automatic Payment Collection. Now, you will see a modal displaying all service contracts and subscriptions enrolled in Auto Pay.
Click the check box next to the relevant contract or subscription, and then in the upper right-hand corner, select "Action On > Unenroll."
#2 In the invoice
Go to Service > Contracts and the details view of the contract.
Click the Payments tab and open any invoice sent to the customer.
Click the "Unenroll" button in the Auto Pay Enabled tile.
#3 By editing the Automation settings
Go to Service > Contracts and the details view of the contract.
Click the Payments tab and the Pencil icon in the Next Payment tile.
Click Unenroll.
Methods #2 and #3 are valid for subscriptions, too. You will need to do this in the Payments tab of the subscription.