Used to work fine but has become progressively more rubbish. Does not work at all now. Over two months later and it still doesn't work. There seems to be an obvious contempt for their customers at work. Have deleted and reinstalled this app a load of times, as suggested. Has for months, now, however, been stuck in an eternal loop whereby I enter my details on the login page and I am then brought back to the login page. There may well be some sort of existentialist, Beckett-like irony here.