price not showing correctly in cart

Hello ..i am using this plugin from last 10 months .It working fine..I think i was not noticed yet..In my site there is two currency one “$” and second one is “€” . when i change currency to € the default price of product is example “€ 50” and i set “Name your price for this product” to “€ 40” in cart the price shown for this product “€ 30” instead of “€40”..please help me how i can resolve this..

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