I have a flag on my zotero page that tells me I am out of my storage quota and it will not save any more information. When I look at my settings it indicates that I have only used half of my storage. I don't want to purge my storage because I am working on projects right now. How can I fix this problem without have to pay for more storage. I don't feel like I should have to when I have only used half of what should be available.