Google announced that Google+ for individuals is being shut down April 2nd. Google has a FAQ about the shutdown.
While Google+ for GSuite, which is what MCAD uses, is not going away, there will be some changes.
If you use Google+ and wish to ensure you don't lose any data, Google gives instructions for backing up your Google+ profile.
Backups are always good to have even when services aren't being changed or terminated. This is particularly important when considering one will eventually graduate or leave MCAD.
Linux Systems Administrator