missing data

Hi there, 

Welcome to the Box Community, I'm happy to help!

To confirm, do you own the missing contents or are these collaborative contents or folders owned by someone else?

If a collaborative content that you do not own is missing from your Box account, it is most likely that the owner has removed your access as a collaborator. You will have to contact the owner of the collaborative item missing from your account to have them re-invite you to that content again. Its also possible that the item was deleted by another collaborator, if that is the case, you would still need to reach out to the owner so they can restore it since only the owner and the 'deleter' may restore deleted items in Box.

If you own the missing content, I’m sorry but we are unable to support file recovery for users of our free plan as stated in this article: https://support.box.com/hc/en-us/articles/360044196093-Managing-Trash 

Contact Box Product Support immediately if the content you deleted is no longer in your Box Trash.   When Box purges your trashed content there is still a 14-day grace period for paying customers, during which Product Support can recover your content.  Beyond this 14-day grace period, however, files or folders purged from your Box trash may not be recoverable and may be lost forever. Please note that this recovery grace period does not apply to Free accounts. We are unable to support file recovery for our Free Individual plan. 

Try searching your Box Trash again using its filters, Box allows you to sort and filter items within the trash folder. You can filter content by Items I deleted and Items I own.

• The Items I deleted filter will display all items deleted by you, regardless of who created or owns the item.
• The Items I own filter will display all deleted items that you own, regardless of who deleted the item.

Tip: Filtering by "Items I Own" is helpful when trying to track down content that may have been deleted by a collaborator in a folder you own.

Hope this helps!

All the Best!