I have reply your question via the following post :
Please help to perform packet capture at the Fusionhub end and verify whether the OpenVPN traffics generate from the client is reaching to the FusionHub. If you found the traffics is reaching to the FusionHub please follow up that using a support ticket.
for OpenVPN, the Server IP address in the ovpn file is set to FusionHubâs private IP address, you need to modify the ovpn file to set server IP address to FusionHubâs public IP address. We will improve this in future release.