You can translate the content of the password reset email by using any translation plugins. You can also modify the text using the existing filter: pp_login_form_password_reset_email_content

Please add the following code in your current theme’s functions.php file to change the message using filter:

add_filter( 'pp_login_form_password_reset_email_content', function( $content, $user, $reset_url ) {
	$content = sprintf( 'Hi %s', $user->user_login ) . "\r\n\r\n";
	$content = 'Someone has requested a new password for the following account on YOUR_SITE_NAME' . "\r\n\r\n";
	$content .= sprintf( 'Username: %s', $user->user_login ) . "\r\n\r\n";
	$content .= "If you didn't make this request, just ignore this email. If you'd like to proceed:" . "\r\n\r\n";
	$content .= esc_url( $reset_url );

	return $content;
}, 10, 3 );