Your username must be in the form firstname.lastname@example.org (it must have "@uccs.edu" on the end).
You should see a screen similar to the following asking you to verify and accept the server's security certificate. The server cppm.uccs.edu is the server you are authenticated against. To be safe you should always validate the certificate you are about to trust. To validate and see more information about the certificate, click More Details
Scroll down until you see the Fingerprint section
Your certificate fingerprints should match the fingerprints listed below...
If your certificate fingerprints match those listed above, you can trust the certificate is valid. Click Trust.
Screenshots from iOS version 12.2
Updated on 2019-05-15