Don't show meal plans older than (sign up date + 1 week)

membermouse.php

<?php
/**
 * Don't show meal plans older than (sign up date + 1 week)
 * @since 1.0.0
 *
 * @author Travis Northcutt
 *
 */
function gfmp_show_allowed_meal_plans( $query ) {
	// First, make sure we're on the front end and on the right archive view
	if ( $query->is_main_query() && !is_admin() && is_post_type_archive( 'meal-plan' ) ) {
		
		// Get the number of days a member has been a member
		$days_as_member = mm_member_data( array( 'name' => 'daysAsMember' ) );
		
		// We only want posts as old as a member, plus up to seven days
		$days_ago = ( $days_as_member + 7 ) . ' days ago';
		
		// Set our query parameters
		$date_query = array(
			array(
				'after' => $days_ago
			)
		);
		
		// Alter the query
		$query->set( 'date_query', $date_query );
		
		// If no posts returned, filter the message displayed
		add_filter( 'genesis_noposts_text', 'gfmp_noplans_text' );
	}
}
add_action( 'pre_get_posts', 'gfmp_show_allowed_meal_plans' );
/**
 * Alter the message displayed if no meal plans found
 * 
 * If user is logged in, apologize and direct to the contact form
 * 
 * If not logged in, display login form + link to join
 * 
 * @since 1.0.0
 *
 * @author Travis Northcutt
 *
 */
function gfmp_noplans_text() {
    if ( is_user_logged_in() ) {
		return 'Sorry, we seem to have a slight problem. Please <a href="/contact">send us a quick message</a> and we\'ll help you out. Thanks!';
	}
	else {
		$login_form = '<form action="/wp-login.php" method="post">
			<table>
			<tr>
			<td>Username</td>
			<td><input type="text" id="log" name="log" /></td>
			</tr>
			<tr>
			<td>Password</td>
			<td><input type="password" id="pwd" name="pwd" /></td>
			</tr>
			<tr>
			<td></td>
			<td>
			<input type="submit" name="submit" value="Login" />
			<input name="rememberme" type="checkbox" checked="checked" value="forever" />
			Remember me
			</td>
			</tr>
			<tr>
			<td></td>
			<td>
			<a href="[your forgot password page here]">Forgot Password</a>
			</td>
			</tr>
			</table>
			</form>';
		return 'Sorry, you seem to not be logged in. You can do that below. If you\'re not a member yet, check out our <a href="/membership-options">membership options.</a>' . $login_form;
	}
}