In Chrome, go to More tools > Extensions. Find the VisualSP app and click on Details.
Select the option to Allow in incognito.
Go to Extensions and click Details for the VisualSP - In-context user training extension.
Select Allow in InPrivate
Go to Add-ons (Ctrl-Shift-A) > and click the 3 ellipses for VisualSP Training for Office 365 and select Manage.
Select Allow in the Run in Private Windows section: