Below is a quick guide on accessing PowerBI and the steps to take if the Direct URL link doesn't work:
You can Access PowerBI online through this link https://app.powerbi.com/ if this doesn't work, follow the steps below.
Go to www.office.com and click on the "Sign In" button (enter CHRC credentials)
On the top left of the screen select "App Launcher" .
Select "All Apps" if Power BI isn't present
Search Power BI and select the program
From the screen below, you can select the workspace required. You're now connected!