The device arrived today.
I immediately put it to charge because I read the post about the first launch.
When I put it on the charger, it turned on by itself and the language selection started.
The first setup took place without selecting the Wi-Fi network. I read that this was a problem for many people, I was also forced to move on because there was no way to select the network.
As a precaution, I went into the settings. Here, I tried to take all the safety measures so that the device does not shut down. Turning on developer mode was unsuccessful, bluetooth and SIM operations did not work either. At that point, I already guessed that I was walking in similar shoes as the others. (for them, the Wi-Fi network selection was the point that failed).
Since every step seemed to fail, after a bit of thinking I thought the best thing to do was to leave it on the charger and reboot the device to see if it would boot. It turned on, I entered my code, but the loading screen spins non-stop, I think it’s completely stuck.
Presumably, I am also one of those to whom the device was sent in the very first round, and this may be one of the reasons why I noticed a similar error to the first commenters.
I am confident that it can be fixed without sending it back, I will try to follow all the steps I receive from Jolla in the future.