Supported platforms, protocols and services
Versions of OpenVPN over Cloak installed on client versions older than version 3.0.0.0 are not compatible with newer client versions. If you installed OpenVPN over Cloak on client versions 1 or 2, you need to reinstall the protocol to make it work on versions 3 and 4.
The list of supported protocols is valid for version 4.6.3.0 and newer. Supported Devices and Protocols Table for Older Versions.