You will likely get faster help through the #help channel as they will have specific information on how the network services work on that network.
However, some things to get you started:
* If you set a mode during a netsplit, it will be reset after the netsplit ends.
* Unless the channel is registered, if everyone leaves, all settings will be reset.
* You may be running a script that tells Chanserv to change the setting (or another op may be).