Make sure you're using the "Chess" app, and not the "Chess.com Classic" app. I made that mistake and noticed that the tactics trainer on the classic gave me 1000-level problems, live chess lacked premoves, and there was no way to resign or offer draws.
The Chess app has pretty near full functionality. You can join tournaments by going to 'play', 'new game', and then click join a tournament.
it doesn´t appear the tournament list ant the time table
can anybody help me?
thanks