My subcollections with all my annotations on pdfs for systematic review suddenly disappeared... Could anyone please help with restoring the subcollections..?
Some collections of yours were deleted a couple weeks ago, if that's what you're referring to, but none more recently.
If you (or someone with access to your account) did this accidentally on another computer and you just synced the changes to this computer, you can try restoring from one of the automatic backups.
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If you (or someone with access to your account) did this accidentally on another computer and you just synced the changes to this computer, you can try restoring from one of the automatic backups.