I had the same problem recently and kind of resolved after the last updates for CC and Indesign.  I am still a confused as I tried to do a test by adding a comment and using the @symbol to mention my own name.  I havent seen emails or notifications for that.  Is this only meant to work for the reviewers and not for the person that created the file?  I thought it would also work regardless.  Does anyone know? ... View more

I have the same issue.  Was it fixed? ... View more

I completely agree.  It's almost 2021 and this issue does not goes away. This really defeats the purpouse of using a "Cloud" for project collaboration if in the end things have to be done manually.  Big waste of time and money.  I will try the steps suggested by Cliff later tonight and try to report back if it worked.  I am really tired of having to deal with this crap of a problem. ... View more

Did you resolve the issue?  I have the same problem with files larger than 20 megs. ... View more