If you click on Equatio and nothing happens, then most likely you need to allow trusted third party access.
First, sign in with your Admin account at admin.google.com
Navigate to the left sidebar to Security -> Access and data control -> API Controls
Then click on Manage Third Party-App Access
Click on Add app -> OAuth App Name or Client ID
Search for Equatio and then select it.
Make sure to check all scopes then continue and configure as "Trusted for the desired organization units
Select Finish when complete.