Hello,
I have this error :
Machine is not reachable. Please check the internet connection and firewall settings of this network.
It's a hosted licence.
@Hacpo as per our private conversation machine was powered off due to inactivity despite the fact that an email had already been sent to the owner of the key about this.
Now machine has been un-parked from our side so please start using as per provided link for the Free Hosting Usage Requirement.