I have guest access to an account on Trello. I have been (in the past) able to follow the teams links to Dropbox files no problems. After a hiatus of several weeks, I am back, but the Dropbox links no longer work for me. I can see the link. The flag "Restricted Content' appears at the end of the link. If I click the link, it invites me to log in to Dropbox. The correct path flashes up for a half a second, then I get the message "This folder does not exist." I am able to see all my other Dropbox folders just fine. I have tried resetting, restarting, relinking the accounts, but the same thing is happening. Ideas?