Hey do you play bakery story
I'm not sure exactly why there haven't been teasers - my best guess is that TL has been busy, and the people involved in creating the images for the teasers simply haven't had the time. There have been lulls in teasers before, so I doubt they're stopping them entirely.
The only way I've heard of being locked out of the games is people who have been banned, for breaking rules, harassing, etc. Maybe they meant that they got a new device, and didn't know how to transfer? As long as you're not doing mean things, I don't see why you would be banned from the games. And if you do ever get a new device, there are several ways to transfer all the games
Link to the blog