If you click on the cloud icon at the end of the value field, does it still contain the old shared value “LINK TO YOUR PROJECT…”?
The state that the variable is in right now is you have only made the change (added your link) locally and it’s still using the previous shared value.
If you use the three dots menu, you can add in the Shared Value column to see the value that is seen by the Postman API. It needs to be shared in order for that to pick it up.
You can use the Share all to share your edited version or you can update the shared value of each individual variable.
The variable experience has recently changed so this will be a new step and we’ll update the challenge for that day to include this step.