Shopify, both ways, and the invoice it deliberately does not raise

A Shopify order arrives here as a confirmed sales order and stops there. No invoice is raised and nothing is marked paid.

That is deliberate, and it is the part most integrations get wrong. The money was taken at the checkout by somebody else’s gateway. Raising an invoice here would put the same sale in your books twice, and marking it paid would invent a receipt into a bank account that never saw one. The sales order records what was sold and to whom; what you do about the paperwork is a decision you make, not something an import assumes on your behalf.

Nothing changes until you connect a shop, and the plugin has to be switched on in Settings before it appears at all. Since 7 Oct 2026 Shopify is an integration, free on every plan, in Settings, Integrations.

Two things are worth knowing before you turn the stock push on. The first push overwrites what Shopify believes it has, so if your counts here are not right yet, that is an outage on your storefront. Set your stock, check it, then switch it on. And an existing warehouse whose name matches a Shopify location is adopted rather than duplicated, which is what you want, but worth checking if you have two warehouses named the same thing.

If the app is uninstalled from your Shopify admin, we are told, and the connection is switched off here rather than left calling a shop that will refuse every request.