Name appears in Flamingo but not in sent email

Hello,

Here is my form:

<label> Votre prénom (obligatoire)
[text* your-firstname] </label>
<label> Votre nom (obligatoire)
[text* your-lastname] </label>
<label> Votre adresse de messagerie (obligatoire)
[email* your-email] </label>
<label> Objet (obligatoire)
[text* your-subject] </label>
<label> Votre message (obligatoire)
[textarea* your-message] </label>
[recaptcha]
[submit “Envoyer”]

When I look at the stored message in Flamingo, information is displayed correctly:

your-firstname Vincent
your-lastname Musolino
your-email [email protected]
your-subject Test sans type
your-message Test sans é

However, when I look at the email sent, here is what I see:
From: [your-name] <[email protected]>

The old [your-name] tag appears instead of the two tags that I defined.

Why?

Thank you for your help

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