Order #12385 was placed on May 12th. I purchased a RCD330+ standard head unit, a backup camera, and a quad lock adapter for my 2017 VW Passat. It arrived quickly May 26th. This weekend I had the head unit, camera, and adapter installed by a professional. However, I have two problems. There is almost no sound coming from the right front speaker when using the new head unit. The other 3 speakers work fine. I switched back to the old factory head unit and all four speakers work again. Also, as I mentioned in an email last week, The unit LCD display works fine, but the function buttons do not light up. After switching back to the old head unit, the buttons light up fine. The problem may be with the new RCD330 head unit or the quad lock adapter. Can you help me?