Did you try doing all the reset and restore options (holding down reset button)? Can you load the S9 image onto an SD card and insert it?
This 13.0T model has the same chasis, but no sdcard reader. Does anyone know where to find the cron jobs? It seems to be some chroot proceses, isn't it? Every X hours, it changes the worker config.
Did you hold the reset button for 5-10 seconds and wait for it to reset to factory settings?
The cron tasks are in /var/spool/cron/root
You do have something running multiple instances of a process named "M5" on eth1 interface. If the reset button method doesn't work, try to ssh into the device and look at this /root/m5
You can also try ssh'ing into it and editing /config/cgminer.conf with your pool configuration.