@shogoxxx9
You need to be on Paid Plan.
Also, If you are testing the meta data configuration using version-test (or xyz) link for the app. It won’t show up.
It will show you the setting thats configured on your live app. Once you deploy the changes, they will start to reflect after few mins (typically) on all the links are per the configuration deployed for live version.
I hope that makes sense.
Let me know if that worked for you?