I have enabled these response tokens:
activity.id
activity.name
experience.id
experience.name
offer.id
offer.name
They don't appear to be working. While on the test page, Network Tab, I search for "mbox" and after clicking see this:
- {sessionId: "8ebffec1cef342bc855b4547471beb9b", offers: [{plugins: [,…]}]}
- offers: [{plugins: [,…]}]
- 0: {plugins: [,…]}
- plugins: [,…]
- 0: "<script type="text/javascript"> ↵/*T&T Metadata v3 ==>Response Plugin*/ ↵window.ttMETA=(typeof(window.ttMETA)!="undefined")?window.ttMETA:[];window.ttMETA.push({"CampaignName":"","CampaignId":"","RecipeName":"","RecipeId":"","OfferId":"","OfferName":"","MboxName":"target-global-mbox"}); ↵</script> ↵"
- sessionId: "8ebffec1cef342bc855b4547471beb9b"
I added the ttMETA code to the page and see this in the console:

I'm using A4T and at.js 1.7.1
Ali