Only one translation problem

Goodmorning,
we have only one problem of translation when plugin show subscription period and subscription price in italian.
Exemple:
In english is: From: € 25,00 / month for 6 months
In italian is: A partire da: € 25,00 / month for 6 months.
We tried all without solving it, all italian file .po is translated.
Can you solve it?
Many thanks

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