While using an AdvanReader 150.03 in the rare installations where the client doesn't allow internet access but requires sCloud a known workaround is to set the dns as ntp servers to update the reader time.
To do so log in to the machine via SSH and edit /etc/ntp.conf and add the line
server <dns_ip> iburst
to the list of existing servers and reboot the machine.
Upon reboot the reader should have the internal clock on time.