I've been connecting to my university's network since I bought my N9 back in October. Now they have changed something. I think it requires a certificate - which I've downloaded and installed and turned on all the settings. (They are also moving to eduroam - whatever that is.) I have the settings:

Security method: WPA EAP
WPA EAP type: PEAP
Select certificate: None (it won't let me select any certificate)
EAP method: EAP MSCHAPv2
username
password
Advanced settings
Proxy: no proxy
auto-retrieve IP address: on
auto-retrieve DNS address: on
Manual username: on
username
Require client authentication: off
Hidden WI-FI: off
WPA2 only mode: off

This has always worked as I said. It stopped a few weeks ago. IT (at University of Pittsburgh) says the certificates are not needed for mobile phones - but the connection stopped working after they made the change as far as I know.

I've tried changing things but no success. I don't know how to run any diagnostics. The connection fails, says there is something wrong with the connection or it can't authenticate.

Any ideas on how to fix this? I use the wi-fi at home and with a Clear mobile modem.