You are rigth: the product's expiration description is wrong and we must change it, I am going to told to developers to change it on next HSNM release.
About "Expiration Date" on card's export, the system calculate the date starting from the cards creation (because you haven't any login yet); you see the end of month because on the product you set "Day and hours End of month" as "Expiration type"
Anyway the card's expiration is calculated starting from the first login
Hope this help you to understand how HSNM handle the expiration of an user/card
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