Delivery Date & Time Slots

Yes. The page contains the deadlines of the next order windows, not the remaining time. The browser computes the countdown and switches to the next window when a cut-off passes, so every visitor gets the same cached page and still sees the right time.

The store time zone from Settings → Appearance → Time zone, for the cut-off, the time slots and "today". The countdown itself is a duration, so it is right in every visitor's time zone.

Its processing time is longer: the product or its category has its own Processing time on the Add-ons tab. In the cart, a package waits for its slowest product.

Yes. Every vendor package has its own shipping method and therefore its own picker (or estimate). Each vendor order stores its own slot.

It is added to the shipping cost of the chosen method, so it appears in the shipping line, is taxed like shipping, goes to the vendor on Multi-Vendor and is shown on the invoice. Free-shipping promotions keep the shipping rate at zero, but the slot fee is still added.

The slot is checked again when the order is placed. The second customer is asked to choose another slot. In the rare case of two orders in the same second, both are placed; the slot board shows the overbooking.

Yes, on the order page (Change delivery). The shipping cost is not changed and capacity is not checked, so you can always move an order.

Yes, orders in the statuses chosen in Order statuses that free a booked slot (default: Canceled, Failed, Declined) no longer count.

Yes. Give the method its transit time on the delivery calendar. The carrier's own delivery-time text stays in the method list as before.

Yes. Leave every method on Estimate only (the default). Turn off Show the delivery estimate on product pages if you want estimates only in the cart and at checkout.

The add-on adds the line after the shipping method of the default invoice and order summary. If you edited them and removed that line, insert {{ snippet("kv_delivery_slot") }} in Design → Documents (see Invoices and e-mails).

The calendar, closed days, method settings, slots, processing times, the delivery data of orders, the settings, the snippet and its line in the documents. Orders are not touched.

Without a valid license (no key after the 14-day start period, an invalid or revoked key, a domain the license does not cover, or no successful check for 14 days), delivery estimates, the countdown and the delivery date and time slot picker are hidden on the storefront and slot fees are not added. Checkout and orders keep working with the normal shipping rates, and the delivery data of earlier orders stays visible. Once the license is valid again, everything is back.

Open Add-ons → Manage add-ons → Delivery Date & Time Slots → Settings → License. The status line says what is wrong: no key, a key for another add-on, a revoked license, or a domain that the license does not cover. Fix it and click Check now. See License.

Yes. Subdomains of your licensed domain (for example staging.example.com) and local development hosts (localhost, private IP addresses, .local, .test) are covered by the same license.

Nothing changes for 14 days: the add-on keeps working and retries every hour. Only if no check succeeds for 14 days is it switched off until the next successful check.

No. The check runs only in the admin panel or from cron, at most once a day, never while customers browse or check out.