the price HTML overwritten by CURCY plugin

Hello! I have an issue with the WP Upsell plugin. In the checkout upsell section, there is a problem when paying in a foreign currency (EUR), while our home currency is CZK. The price is displayed correctly, but when added to the cart, only one euro is added to the total amount. When I run the entire order in EUR from the beginning, the prices are incorrect. But when I run the entire order in CZK and switch to EUR only at the checkout, the prices are correct.

I duscused it with UpsellWP support and I have their answer here:

Regarding the price HTML issue in cart.

The total is calculated correctly however the price HTML is being overwritten by CURCY plugin. Though the UpsellWP is compatible with the CURCY plugin, it is still displaying the incorrect price for our upsell products due to conflict.

So kindly do contact CURCY plugin support, and here are the supporting references while reaching out to them.
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These are the hooks we are using to manipulate prices
1) woocommerce_cart_item_price
2)woocommerce_before_calculate_totals
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You can also view the compatibility file in our plugin in specific path.

app/Modules/Compatibilities/CURCY.php

Regarding the incorrect display of the prices.

This issue was caused to the browser cache which can be refreshed with a refresh.

The probability for the occurrence of this issue is low and it can be fixed by a hard refresh or by clearing the cache.

Can you help me, please?