If it happens that a Uniview unit, through the Cloud, connects correctly with the APP and with the Ezcloud web platform, but with the EzStation PC software it does not connect, indicating the Offline failure (Operation Failed)
What you have to check is that the date and time of the equipment, as well as the DST are configured correctly:
In case they are not correctly configured, it is when you can have problems with the connection to EzStation