Can't upload my ebook to Apple Books via PC
Hello all, I'm trying to upload my book to Apple Books. I'm using my PC windows 10. I follow the "How to Publish an Ebook from the Web" instructions. I have an account in iCloud, and iTunes Connect. I get as far as a message: "To publish to Apple Books, your Apple ID must be associated with a content provider" and it says to set up Users and Roles in iTunes Connect, then try again.
BUT I can't get through this step. 1. I get sent to Pages but the Books icon won't respond. 2. I can't figure out how to set up Users and Roles in iTunes since I can't get to that page.
Thank you for your help.
Windows, Windows 10