Prices in backend orders not recalculating correctly – Premium

Hi,
my default currency is CZK, secondary currency is EUR. Using fixed prices for both CZK and EUR prices. After creating a EUR order I found two issues in the backend:

1) while keeping the order in EUR, when adding new product to the order, it is added in the default currency (CZK) but the currency symbol keeps the EUR symbol, so the result is CZK value with EUR symbol
2) when switching to CZK from EUR, the conversion runs correctly
3) when switching back to EUR, the conversion does NOT run at all. All prices remain in CZK values, only the EUR currency symbol replaces the CZK currency symbol.

Cannot work with this. Is there a solution?

CURCY – WooCommerce Multi Currency Premium, v. 2.3.10, WC v.10.1.0, PHP 8.1