There is a problem with opening Preset Settings on Android devices. It is a Telegram client issue. You can open it from the web: web.telegram.org If you dont have such problem on Android device please dont update Telegram.
There are rumors about accounts which were banned for using bot. It might be true. If you are worried switch to text mode in Sharing options and remove bot from friend/alliance.
Bosses which take 4 grids on the map are bugged. if small mosnter spawns inside 4-grid boss it makes him invisible. kill small bosses around. refresh the map and it should be visible.