This is happening with us as well, but only one person right now, which is very odd.

We were having the same issue. Our users are on Chrome, we found that when they switched to Incognito mode, it would work but that's not a permanent fix. When I called Support, these are the exact steps they gave us to resolve it and so far it's working. Clear Cache & Cookies for all time in the b...

Our project managers generate the proof, send it to appropriate stakeholders and notify Traffic when all revisions/comments are final. Traffic then adjusts the schedule as needed and the designer accesses the proof to implement the revisions. We have such a high volume of projects and daily deadline...