I get a message saying that I have to register (and an email was sent which is not the case) when I try to 'like' a comment when using the Android app.  I have been registered since 2014.  I also get blank screens for several seconds whenever I try to go to an article or back.  To be honest, the app got so bad after the last update 3 or 4 days ago that I uninstalled it.  The portfolio change percentage was also removed from the portfolio view, so I am now using a Google doc on my phone to track my portfolio.