neilarey Another thing: The menu for mobile on the adventcalender has a z-index problem. It has the same z-index (1) as the red background, so it is under it. If you change the background to transparent the borders of each square are still over it. Changing the z-index of the menu to a higher number solves it.
PETERMORRIS966 The Challenges and DDs progress is stored in cookies. If you delete all cookies when closing the browser, it is gone. Usually in the settings of the browser there is a section were you can manage the cookies and make exeptions for specific sites, like darebee.com to avoid that. The advent-calender uses a different storage technique called 'local storage'. It seems that it is not working properly on IOS (Apple) devices.
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