i tested setting the interval in sourcemod.cfg.
You'll probably want to set adsql_debug 1 in the main server.cfg, just so it gets set earlier. You don't have to have debug on to see which ads the plugin loaded from the database, it always shows that -- but with debug enabled, you should see those ads "fire" in the server console as well.
sounds like it isn't finding any ads, but without the full set of console messages you are seeing from time you start it up, i'm just guessing
