GOG Galaxy:

When I press the purple START button, it will be gray for a short time, then "Syncing 0%" will flash, then gray again and finally purple.
And nothing....
I have made all the suggestions here.
I run it as an administrator.
The program is enabled on the firewall.
I installed direct x.
Reboot notebook.

My config:
Lenovo legion Y520
Intel core I7-7700HQ 2,8 GHz
8GB RAM

What else can be done?
Idea?