Hi @Allan Stark ,
Do you have permission to the user's site or library?
Per my test, if you have permission to this site and only want to check the contents of the library, then you could see these libraries with your account from the link created in your panel.
If the answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.