Zotero for Android does not open synced attachment
I use Zotero on both my laptop and on an Android tablet. For most items, the tablet shows that I have a pdf attachment, but does not open it. The pdf symbol shows a pair of eyeglasses. I am paying for Zotero storage, so I suppose the attachment is also in it, but still, it seems unreachable from the tablet.
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For more information see "Stored Files and Linked Files" in https://www.zotero.org/support/attaching_files