Earlier there was an option in Menu which enabled me to freeze my account, it was very helpful. But now I can't see that option anywhere. How can I freeze the whole app, as I don't want to freeze schedules one by one?
The freeze function was moved into settings (where it should have been from the start, to be honest). If you open up the settings panel, it's just a bit down from the top!
As to that second issue, I went ahead and unfroze one of them for you so the rest of them appear. I'll go ahead and get that issue fixed soon :)
