A family of Microsoft word processing software products for creating web, email, and print documents.
Which web browser you are using isn't important here. The problem is that you are using a limited version of Word.
As I suggested in a previous message, see if you can use any of your third-party products for references. I haven't tried PERRLA myself, but it appears to include citations & bibliography functionality. See https://perrla.zendesk.com/hc/en-us.
Of course, if you are allowed to install the full version of Office, using your education license, that would be an even better solution.