I suspect that this may be due to reported server issues today.
See:
https://forums.flightsimulator.com/t/server-issues-today/535441/
When these reported server issues are resolved I hope that everything returns to normal.
If, however @Mattius88 and @Apochi5, you are still experiencing issues when things get sorted on the server side then please post again here that your issues are still on going.