"Copy" is content/text that is primarily used for advertising/marketing 

Yes, you are correct that Flutter support isn't currently available for the Optimizer Decisioning extension (which is what you would use to implement Target via Edge). There are various Flutter wrappers that have been built (i.e., for Analytics), so you could create your own wrapper for Target

If the ID of the button is the same then it would be reachable by Activity B. The only possible challenge I can think of is the order of the activities being rendered i.e., if Activity B renders first with different text/href but is then overwritten by the HTML Offer from activity A

It sounds like a user qualifies for the activity and then within the activity there is some code that triggers the pop-up after 30 seconds. If that's understood correctly, then yes Target will count a visitor entering the activity as soon as they qualify for the activity, even if they don't reach th...

Might be this that you're looking for?

One option might be to use a Custom Event - you could set up a listener for the Content Rendering Failed event (more info here) and then send then log that occurrence somewhere (i.e., your web analytics tool)

You would need to use something like this example, where you first send the parameter(s) using getOffers, then apply the offers using applyOffers and then trigger the view/state change using triggerView.  Probably depends a bit on your core Target implementation but one option might be to create a J...

Yes, you just need to use a string (i.e. "profile.t1") instead of profile.t1

You could follow something similar to this example for bucketing users into different groups. In your example you would divide into 10 different groups and then your Activity-level audience could be defined as Group A + 10 Internal Users; and your Activity traffic allocation could be set to 100% aga...

I just tested this using the same URL in your screenshot and it worked as expected i.e., I could switch to Browse mode, accept cookies and then return to Compose mode to make changes. I would suggest raising this with Customer Care because it will require some further troubleshooting beyond what is ...