Version 18.0.29 of the OmceanBooking app is now available with these changes:

Card installments with ECPay and NewebPay: turn on the new Allow installments option in your ECPay or NewebPay payment settings. Customers can then choose Full payment or Installments at checkout and pick 3, 6 or 12 months on the payment page. Activate installments with your payment provider first.
Installments are offered only for one-off purchases in NT$. They are not offered for subscriptions or ATM bank transfers, and which plans a customer can use depends on their card.
Clearer door reader labels: door devices now show as Entry reader or Exit reader in your door access settings, in the Direction column of the access history, and when customers choose a door in their account.
The section on your customers' Account page is now called Access and check-in.