Hey there, Chris,
This may have something to do with older projects from last year not saved when Creative Cloud Sync was removed. A lot of people lost projects because they did not back up projects to their laptop prior to the service being shut down. We warned people several months in advance, but not everyone got the message.
I suspect that your case may have been also been caught up in all this. If you are in EDU, then sync was removed more recently, so that could also explain the reason. Sorry to say, I think these older projects are not recoverable. I lost some projects too, as I was not fastidious enough. I apologize for the frustration.
Regards, Kevin
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