Amazon MCF by ByteStand
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Feedback we would like escalated to your product team We want to be direct about how this reached us, because we think it is a design problem rather than a mistake on either side. Enabling Flex is a migration, and the app does not present it as one. It replaces the fulfillment location, leaves Sync permissions unapproved, and requires a Rate Card that exists nowhere in Shopify — three separate setup steps, none of them obvious. In the interface it reads as a tab you can look at, not a change that reconfigures how the store fulfils orders. There was no warning at the point of enabling. No confirmation step, no summary of what would change, no list of what had to be set up afterwards. We would ask you to open the app yourself and look at how this is presented — from the merchant's side it is genuinely unclear that clicking through commits you to anything. And once enabled but unconfigured, nothing in the app said so. ByteStand continued to report as connected and healthy. There was no banner, no incomplete-setup state, no error. The only visible symptom was in Shopify, days later, and it took us fifteen days to trace it back to your app. What that cost us: fifteen days with no order reaching Amazon, twelve consecutive days in which not a single customer could complete checkout, twelve orders created by hand in Seller Central by our customer service team, and customers left without tracking information. We found it because a customer complained — not because any system told us. On the 2025 emails: we understand they were sent, and we do not doubt it. But an email campaign from eighteen months ago is not a safeguard. The person who received it may no longer be at the company — that is exactly our situation — and the setting remained one click away for whoever came next, with no warning attached to it. What we would ask for: A confirmation step when Flex is enabled, stating plainly that it is an upgrade, what it changes, and what must be configured before fulfillment resumes. A persistent in-app warning while Flex is enabled and setup is incomplete. Alerting when inventory sync stops or order submission fails. We are glad to be running again and your support today was genuinely excellent. We are raising this because the next merchant to click that button will lose the same two weeks, and they may not catch it as quickly as we did. Thanks, Andrea Lorca — E-commerce Lead, Boba [email protected]
Thank you for taking the time to share your experience. We appreciate the opportunity we've had to support your stores over the years, and we're glad we were able to resolve this issue quickly once it was brought to our attention. In this case, the issue was related to the optional Flex workflow, which requires additional configuration after it is enabled. We understand your feedback that this process could be communicated more clearly inside the app, we've shared your suggestions with our product team, and a plan has been created to improve the Flex onboarding experience. We also appreciate your recognition of our support. Our goal is always to diagnose issues quickly and work directly with merchants in order to get them fulfilling orders as fast as possible, and we're happy we were able to identify the issue and resolve all points the same day you contacted our support team.
In the past 3 years ByteStand has automatically sent 10's of 1,000's of orders to Amazon MCF in the UK, Canada, and Europe! The app also keeps our FBA inventory quantities synced from Amazon to Shopify in connected countries. Real-time Amazon shipping costs populate on our check out and order statuses are automatically updated. Plus, their customer support team is very responsive, jumps on video calls, and always helpful
We have used this app for years and are always blown away at how helpful their support agent, Cara, is. She always goes above and beyond! It's such a relief to have someone who is looking out for you and your business and can be easily reached. We use the app for Amazon MCF fulfillment, and it is also now syncing the inventory automatically. Highly recommend this app and their services.
Our German shop has been using ByteStand MCF Shipping since 2023. Since then, ByteStand has automatically sent thousands of orders to Amazon for MCF fulfilment, whilst simultaneously synchronising our FBA stock levels from Amazon SC with Shopify to ensure that stock levels remain consistent at all times. We recently carried out an update to start using Flex and gain access to the ‘Order Delay’ feature. In short: the app is brilliant. We have rarely experienced support as good and customer-focused as that provided by ByteStand.
Our NYC based business has been utilizing ByteStand MCF Shipping for 6 years to automatically forward orders to Amazon for MCF fulfillment. Amazon picks, packs, and ships our FBA inventory to Shopify customers seamlessly. The app works perfectly everytime. If we need assistance (a rare occurance) customer support is friendly and a real human. We highly recommend this app.
Our Canada store has had ByteStand installed since 2020 and the app automatically sends our Shopify CAN orders to Amazon for Multi-channel fulfillment. Amazon picks, packs, and ships our orders so it's one less thing we have to worry about. ByteStand also helps us show real time shipping costs (even free shipping) and shipping timeframes to our customers. ByteStand's US based team is human and very responsive - they help us syncing new products to shipping and are so so helpful when we have any questions.
Never had any issue using this app so far and things are syncing well. They have very awesome and amazing customer support. Have a really great experience with Cara as we do a screen share and solve the problem within 10 mins.
For an improvement, I would add a plugin so the shipping address automatically validates with Amazon's restrictions. An Issue I have is some clients go over the 60 character limit and I have to manually shorten the shipping address so it passes through
We've connected our German Amazon account to Shopify through ByteStand. Sending our EU orders automatically to Amazon for MCF fulfillment. We also use Rules by ByteStand to block specific orders from being sent to Amazon and instead letting our 3PL ship larger orders, to save money. The app sync our inventory from Amazon to Shopify automatically and the Virtual Bundle feature is helping us translate our product SKUs to ensure Amazon ships the correct products. As our product SKUS in Shopify are different than their Amazon SKUs. Plus, it's nice that the support team is US based, human, and responsive!
Servicio atento y resolutivo. Ayuda a enviar pedidos de Shopify a Amazon para MCF.
Cara is the best support I ever had!
Wonderful solution & great support staff! Cara was super helpful
Amazing customer service! They helped us set up the app start to finish in under an hour over video call and are available for any questions or concerns. They helped us ship orders to USA and Canada customers, sync the inventory in both countries from Amazon to Shopify, and provided SKU translations allowing us to ship bundles, which was not an option with previous services. Thank you Cara!
What an excellent customer service! We are using ByteStand MCF Shipping to ship Amazon stored inventory to Shopify customers, without the customers knowing Amazon is involved. ByteStand is connected to Amazon USA allowing calculated shipping rates to populate on Shopify Checkout, blocking amazon logistics, and Amazon packaging from being used, and also syncing inventory from Amazon into Shopify. Plus, Cara with their support team is real and US based!
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