We are providing "bulk credits adjustment" feature.
Please follow below steps to update credits for all customers.
Step 1: Please go to customers section in flits admin through left side navigation.
Step 2: You can see "Bulk Credit Adjustment" option at right side corner.
Step 3: Once you click on "Bulk Adjustment" button, you will get one popup.
Step 4: Create CSV as per given sample csv template.
Step 5: Upload it as per below Screen Shot.
(Note: You can manage credit for your existing listed customer only)
Step 6: You will get mail once a process is done.