Steps
Open the customer
Go to Customers and tap on the invoice you want to edit.
Open the actions menu
Tap the floating button ( โฎ ) in the bottom right corner.
Tap 'Edit'
Confirm you want to make changes to the customer.
Update customer details
Toggle whether they are a person or business
Enter the first and last name
Add the business name (if a business)
Enter the email address
Add a phone number (optional)
Enter the billing address
Confirm details
Tap 'Save customer' to save your changes.