Getting menu items to change depending if user is logged in or not

I've created a section of the menu where if a customer is logged in then the section changes. The problem I'm having is that it doesn't change. It stays as if the customer is logged in even if I log out.

The section of my menu

<ul class="dropdown-menu">
    @if(Auth::guard('customer_admin')->check())
        <li><a href="#">User Profile</a></li>
        <li role="separator" class="divider"></li>
        <li><a href="{!! route('logout') !!}">Logout</a></li>
    @else
        <li><a href="{!! route('client.signup') !!}">Sign up</a></li>
        <li><a href="{!! route('login') !!}">Login</a></li>
    @endif
</ul>

My CustomerAuth.php middleware

<?php

namespace App\Modules\Customers\Http\Middleware;

use Closure;
use Auth;

class CustomerAuth
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next, $guard = 'customer_admin')
    {
        if(!Auth::guard($guard)->check())
        {
            return redirect()->to('login')->with('warning', 'Access Denied');
        }
        return $next($request);
    }
}

via Isis