App “Stuck” In Edit mode So ‘+’ button not working or available
Very occasionally, the first screen (the one that should display a table of lists e.g. Christmas 2018) get stuck in a Edit mode. The result is that it does not then respond to attempts to add a list, or go into a list already added.
The solution is to exit the app completely and restart. To restart the app, double-click the Home button to display previews of the running apps, then slide AddressLists up and away.)