This issue is likely related to students not being signed in to their MiamiOH.edu Gmail account in their Chrome browser but a personal one instead. Chrome remembers your last Google sign-in, and it’ll sign you into all new Google apps you launch via a link within it, even if you’re already signed in to your Miami Gmail account in one of your browser tabs.
I always recommend that people use separate browsers for their personal and school Gmail accounts; for example, you could use Firefox for all of your personal Gmail-related activities and use Chrome for your MiamiOH.edu ones. Alternatively, you could create profiles in Chrome for your different Gmail accounts and switch between them for different activities.