OpenVPN clients cannot connect

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If I remember correctly, when I created an OVPN server on my OS, it created an OpenVPN Wizard firewall rule. I did not touch anything else related to OVNP on the FW.
Now one of my remote staff is trying to connect and fails, but I do not see any new log entries for that FW rule that I've turned the logging on for.
But when I create a WAN PASS rule for port 1194, I can see that client's connection attempts being logged.
How is this supposed to work: with the auto-created rule or with my rule?