OK try to verify that the configuration files are in the correct folder, because if you used the ipk / deb installation package, it could also create default config.files in another folder and then this folder will be used in Oscam as well.
Read more about configuring the configuration directory here:
I add that the "oscam.server" file is not enough. The "oscam.conf" file is also important, as a basic configuration for Oscam. Or also the "oscam.user" file for setting up a dvbapi local user. Or, if you use CAIDs in your config files, the "oscam.dvbapi" file (for setting CAIDs priorities) may be also important.