Problems Full Link / Business Package Infotain

Hello together, as I hear a lot of music about Spotify, and also 90% use the navigation of Google Maps instead of the built-in Navi of Seat, I use Full Link several times a day. I have the normal business package Infotain and connect my Huawei P20 Pro over Android car. I have several problems that occur over and over again. 1. The Huawei doesn’t connect via Full Link, and does not do it during the whole ride. It then comes the error message “The connection is gone If I unlock my Huawei, it doesn’t connect. If it normally connects, I don’t have to unlock the Huawei. If the car is standing for some time, it will work again. 2. Often it happens that the connection is established, but the screen from the Seat only shows a completely pixelated image. Picture in the appendix. 3. The infotainment system is hanging up more and more frequently lately, then it drives off. 4. The automatic switch from DAB to FM does not work, although the check mark is set in the menu. If I am in a DAB radio hole, the transmitter (WDR2) would have to switch automatically to FM. However, does not make the radio automatically. I first have to switch to FM manually, then I have to receive the transmitter again. I realize that the DAB transmitter also has to send to FM, so that the automatic change of transmitter functions Rt. The WDR also has that in my region. On Friday I was in a large workshop in Cologne, among other things with these problems. I could either perform these problems live, or show screenshots or even videos of them. The workshop master only said “if there are no TPIs to do anything about it, you can do nothing anyway”. I then left this sentence uncommented and said that the defects still exist. The defects have not been fixed yet. have these been solved? How should I proceed? I am grateful for every tip from you. Greeting Olaf