Forceing currency for third parties

Dear CURCY Pro Support Team,

We are using your plugin to facilitate multi-currency selling in our WooCommerce shop. We have encountered a critical integration issue due to our local shipping carrier, Packeta (Zásilkovna/Csomagküldő).

Our setup and goal are as follows:

1. Our Goal and Setup
We want to show prices, sell and invoice in EUR.
Packeta (Our carrier partner) only accepts order data in HUF for creating the shipping labels and generate tracking no.
We rely on CURCY Pro to handle the currency presentation and switching.

2. The Core Problem
When we use settings for using EUR, there’s this error message from Packeta: You entered an unauthorized currency. You can either enter the currency of the country to which the parcel is being delivered; or if you have set a currency conversion while entering the parcel (not while sending money), then you can also enter the currency to which you are converting.”}

We need a stable way to:

Keep the frontend and paying and invoicing in EUR.

Ensure that when an order is submitted to the Packeta plugin, the order total and currency code are temporarily converted to HUF. Or vice versa. Using HUF as default currency, (this case Packeta can handle it without complications) and showing EUR towrds costumers at the page and at checkout and invoicing.

3. Request for Solution
Since CURCY Pro handles all currency switching within WooCommerce, we need your guidance on the correct implementation:

Is there a CURCY Pro setting (perhaps related to checkout currency or payment gateway currency) that can be used to specifically force the HUF currency for the Packeta data transmission, without affecting the main EUR order record?

If not, could you provide us with a specific PHP filter/hook that correctly integrates with CURCY Pro’s logic to retrieve the HUF equivalent of the total EUR order amount, which we can then pass to the Packeta plugin’s API submission?

If nothing else works, alternatively: frontend shows EUR, and when reaching checkout, there’s a message, that “You will be billed in hUF, on the daily exchange rate, exact amount calculated at checkout” (or sg. that’s informative but not frightening🙃) But in this case we want the EUR prices showed at fixed prices during the process (ex.: 40 eur), we don’t want the prices being shown like 40,73 € or anything like that. And the exact daily rated price shown only at checkout total in both currency. (So we can avoid confusion or discourage the costumers with the 390* bigger number. Instead seeing 40 € seeing 15.600 HUF may seem a bit scary🙃)

Your official advice on how to correctly configure EUR sales with a mandatory HUF data requirement for a third-party shipping solution would be highly appreciated.

Thank you for your time and support.

Best regards,
Saarikaas