You may have to have your dorm/university whitelist your Roku device for use on their network. There are also issues with some 2.4ghz-only devices working on some networks/ISP providers that do not have b/g/n Enabled on it.
If you are using a dual-band Roku device, the above should not affect you, so contacting your dorm/university IT dept. is probably the next best step.
Without direct access to the router, kind of hard to try different things to resolve connection issues.
Only other Setting available to the user would be to try and Reset the Network Connection.
Settings/System/Advanced System Setting/Network Connection Reset/Reset Connection
Roku Community Streaming Expert Just another Roku user... I am not a Roku employee. Insignia RokuTV, Ultra 4660, Premiere+ 3921, Express 4k+ 3941, Streambar 9102