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Account & billing

Subscriptions, payments and invoices

Updated 03 Oct 2026

Castreon licenses are paid monthly (or yearly, where the plan allows it), by card, directly from your castreon.net account. The subscription renews automatically, and the license on the server is extended by itself.

Buying a license

  1. Fill in your billing details in your castreon.net account (Profile & security → Billing details): company, address, country and, for EU businesses, the VAT ID. The country is required — VAT depends on it.
  2. Open Billing and choose a plan. Prices are shown excluding VAT.
  3. Click Subscribe. The window shows the net price, the VAT and the total to pay today.
  4. Click Continue to payment and pay by card on the secure Mollie page.
  5. After payment, the license appears under Licenses with the status Awaiting installation — continue with Installation and activation.

VAT

Invoices are issued by Web Tools IT (Germany). VAT is calculated automatically:

Customer VAT
in Germany German VAT (19%)
business in another EU country, with a valid VAT ID reverse charge — no VAT on the invoice
individual or business without a VAT ID, in another EU country the VAT of your country
outside the EU no VAT

The VAT ID is checked automatically in the European VIES system. If you change it or change the country, it is checked again at the next payment.

Automatic renewal

At the end of each period, the saved card is charged automatically with the same amount, and the license is extended by itself — you do not need to do anything on the server. Under Billing you see the Next payment and the card used for each subscription.

If a payment fails, the subscription shows Payment overdue. The license stays active for 3 more days after the end of the period; contact us during this time so the license does not stop.

Invoices

Every payment (the first one and each renewal) automatically gets a PDF invoice, in your account language. You find them under Billing → Invoices, with the Download PDF button. The invoice contains the service period, the net price, the VAT and the total, plus the appropriate tax note (for example reverse charge).

To correct an invoice (for example the company address), open a ticket — issued invoices are not modified, they are corrected with a credit note.