Overview
You are having trouble logging into a SharePoint site.
How to:
First attempt using an private browsing window.
Google Chrome - New Incognito Window (CTRL + SHIFT + N)
FireFox - New Private Window (CTRL + SHIFT + P)
MS Edge - New InPrivate Window (CTRL + SHIFT + N)
This is a browser window that records no history, cookies or cache which may help ease login issues.
Please verify that when logging in, you are using your username@ccis.edu and the password you've created in myPortal.
If that allowed you to login, clear the browsing data, cache, and cookies and try again in your normal browser window. Reference this KB
If there are still any issues with the login process, submit a ticket at help.ccis.edu.