If you let it boot up completely, press the indented hardware reset button for 8 seconds and release.
This will restore the 2211 to factory default mode. Connect an Ethernet cable from the 2211 to your PC.
Do you get an IP address assigned to your PC (ipconfig from a CMD prompt)?
Do you get a ping response from 192.168.30.1, the default IP address?
If you get a DHCP assigned address and can ping the 2211, open a browser to
https://192.168.30.1 and login
with 'super' userid, and password of 'sp-admin'.
Does that work?