Server profiles in Shared Review disappear

Hi, We are using the Send for Shared Commenting feature in Acrobat Pro DC with Microsoft SharePoint Server. A co-worker of mine likes to name her server profiles using the guide name. She has uploaded at least 10 guides using the Send for Shared Commenting feature, each with a different server profile name. 

When she goes back into Acrobat, some of her server profiles are missing.  The server profiles that are missing varies. One time she'll get 5 maybe, then another time she'll only get 2 of them to show up. Not only do the numbers change, but which ones show up changes as well.

Is there a maximum number of server profiles allowed?

Anybody have any idea what might be going on?

Thanks,

Linda