What are the limitations of DEV3 Kilnfront I should know before buying?

Good to know

• Real payments, email and DNS were not tested with live accounts. Stripe and Razorpay drivers for merchants' stores exist, with encrypted gateway keys, but the simulated gateway is the default and every test and tour used it (card 4242 succeeds, 4000 0000 0000 0002 declines). Email is stored in an outbox unless you configure SMTP, and SMTP was not run against a real mail service. The live DNS driver and Caddy certificate issuance were not run against real domains; tests use the simulated DNS driver. There is no SMS or push.
• Web only, no physical devices. The mobile screenshots and the phone tour are a headless browser at phone size. Nothing was tried on a real phone or tablet.
• Billing limits that come from the shared core. When a real gateway reports a failed payment, its webhook does not yet start Kilnfront's dunning; the core's renewal treats a past-due subscription as paid; and on a scheduled cancel the last period's transaction fees are skipped. Failed renewals are started from the platform console's simulate button, so wire your gateway's failure events to the past-due helper before taking real payments.
• No reservation journal. If the server dies halfway through a checkout, the compensation steps and the sweeper clean up, but there is no journal of stock reservations to replay. A crash in that narrow window can leave stock held until the sweeper runs.
• The REST API is on the top plan only. Keys on the other plans are refused before the handler runs.
• Fees are in USD cents. Stores in other currencies convert with a fixed table in the code; there is no live exchange rate.
• Custom domains need an HTTPS front proxy such as Caddy with on-demand certificates, and a wildcard DNS record for store subdomains.
• Polish left over from review: filter toolbars stack on narrow tables, a few checkout rows are cramped on phones, and Arabic storefronts fall back to a system font. Right-to-left layout works; the Arabic font does not.
• Transaction fees are not returned on refunds. That is the documented rule.
• No Lighthouse score was recorded for this product.