I would recommend upgrading to 2.10.1 as a LOT of fixes have been made since 2.9.5. Then see if you still run into the same issue.
More details about what has changed is available here:
https://openvpn.net/vpn-server-resources/release-notes/
At the very least, upgrade to 2.9.6 which has a security fix and has been out for over two months now.
As a side note, it seems like licenses are consumed per *session* and not per user. If you want to make sure each user only has a single session, under Advanced VPN set Multiple Sessions per User to No.