I've been experiencing an issue where after saving an offer or campaign and then saving the Activity, I see the saved message in green, then it just syncs. So far this particular activity has been syncing for more than an hour!!!
I've cleared cache, deleted cookies, signed out of Target, and restarted my computer. None of these things has worked.
This happens on all campaigns, just re-saving them without making changes
An issue is being investigated, and will be listed shortly on Status.Adobe.com. Once listed there, you can subscribe to notifications as progress is made. I'll check back and let you know when it is live there.