Hi @Cuniceq, @Jonly,
What I can tell is that servers are working nominally at the moment, despite the important activity generated by the launch.
The error message you are getting, if it appears as the very first step of the connection, could mean that you are not able to establish a secure connection to our services.
On PC it can be caused by AntiVirus intercepting secure communications coming from the game, usually the feature causing the issue is called something along the line of “Web Security”. You can try to disable it.
A good way to be sure is to check the certificate you are connecting with as described here