Game still not launching

I bought the Ultimate Edition of the game as a birthday present for my son before the September 19th launch, and he  still hasn't played a single minute!

We have tried everything in our imagination to launch the game by updating all possible drivers, running as an administrator, tried running on older DirectX-versions through Steam, closing all background tabs and so on and so forth.

There are two different outcomes when launching the game. The first one is a return to the EA launcher with the message displayed "Failed to launch game. An error on our end caused the launch to fail. Try again a little later". We must have tried later at least 50 times..

The second outcome is the PC blacks out, sometimes with no message, other times a scrambled, quite unreadable message saying something about DirectX. This leads to a restart of the PC.

Hopefully this will be fixed very soon, or we will have to refund the purchase and deteriorate our trust in EA as a company.

Platform: Steam

When and where it is crashing: After the screen saying "Compiling shader. Please wait until the process is done (loosely translated from Norwegian).

AMD Ryzen 5 5600G with Radeon Graphics RX6400 4GB, 8GB RAM

Windows 11 Home, 64-bit