Training: Instruction to develop new skills.
Hi John,
When you reached the page, the sandbox should've already been active with time remaining shown since you needed to activate it to complete earlier Explore the Learn sandbox exercise. If not you need to Activate sandbox, review permissions, sign-in, etc., and wait until you see "Welcome to Azure Cloud Shell" in right pane, then navigate to portal using link on left.
Once you are in the portal, click the gear icon in upper right and make sure Microsoft Learn Sandbox is showing as Current. If not switch to it and then complete the tasks in the exercise.
Please click Accept Answer and upvote if the above was helpful.
Thanks.
-TP