Every virtual machine has an expiration date, when this date is reached
the machine will be stopped, if the user doesn't renew the machine
it will be deleted and all data on it will be lost.
Running the the virtual machine safely and
updating the operating system is the responsibility of the user.
You can connect to the running virtual machines the usual way: for Windows machines
this mean RDP (remote desktop), Linux machines can be accessed either via SSH
or NoMachine NX (GUI).