Experiencing "Airplane Ears" in my new A7

Hi all, pretty new here, so I hope I'm explaining my challenge properly.. and thanks for your help.

I purchased a 2021 A7 TFSi 50 Hybrid Plugin two weeks ago.

I LOVE the car but since I started driving it I feel an unpleasant pressure in my ears (like the feeling you get when a plane you're on board is landing) once I shut the door and throughout the journey - to the point I end each drive with a slight headache.
When I open the windows and sunroof it's ok but it doesn't make sense to drive with open windows all the time.

Researching the topic I found a few possibilities to remediate the problem:

• Switch the AC to circulation: tried that but it doesn't help.
• Try cleaning/ replacing the AC filter: Did that - still didn't help.
• Someone raised a possibility that the air-vents in the back of the vehicle may be blocked resulting in increased cabin pressure: Service center checked that and all openings are ok.

I'm thinking it may have to do with the soft-close mechanism of the doors creating some suction that reduces air pressure in the cabin.
Another option may be if an active noise canceling system is working in the car.

Did anybody else have this issue and can shed some light on possible solutions?

Much appreciated!