Upgrade StorageData need be redownloaded in Zotero ipad, but local storage doesn't disappear
When I resign up in my account in the same device my ipad which I used a lot of times to read many pdf attachements, I find out that all the data have gone and I need to redownload them. However, some data has been fully deleted, I can redownloaded them. All my notes have gone ! But I find out that the data do not disappear, because I can discover that the app Zotero occupies 15.27 GB Documents & Data in my ipad's local storage. However, when I see the local storage in Zotero, it only occupies 27.81 MB. So I wonder why the data are saved in local storage, I can't use them and How can I retrieve all the data ? Thank you.
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