Install and first invoice

1. Install

Install PrintFlow: PDF Invoices from the Shopify App Store (in your admin it appears as PrintFlow) and approve the read-only permissions. You start on the Free plan; no card is needed.

2. Complete the setup checklist

The Dashboard shows a short checklist:

1. Company details: legal name and address, printed as the seller. Leave the address empty to use your Shopify store address.
2. VAT / tax ID: required for invoices to EU and UK customers. Invoices without it are blocked there, to keep you compliant.
3. Invoice template: a clean default template is ready. You can change it later.
4. Numbering: confirm the format and the next number.
5. First invoice: issue one from an order.

All of these are in Settings.

3. Issue an invoice

• From the app: open Orders, find the order and choose Print or Download.
• From the Shopify order page: open the order, choose PrintFlow documents in the Print menu (or Download PDF by PrintFlow under More actions), pick the document type and generate it.

If a document is blocked

The app refuses to issue a document rather than print a wrong one:

Message	What it means	What to do
Totals don’t match Shopify	The app’s recalculation differs from Shopify’s totals	Contact support with the order number; no number was used
Compliance check failed	A required field is missing for the selling country (for example a VAT ID)	Fix the field shown in Settings, then try again
Monthly document limit reached	You have used your plan’s documents for this cycle	See Plans and billing