Hi @Anonymous , you can remove the button with JavaScript. There is a sample here that details how. As for automatically populating the email address, you can use "login_hint" claim. If you wanted to just fill the field, there a couple of solutions:
- https://stackoverflow.com/questions/58278385/how-can-i-populate-the-azure-ad-login-page-with-an-email-address-of-my-choice
- https://stackoverflow.com/questions/54118940/populate-the-email-address-text-box-in-azure-ad-b2c-orchestration
Please let me know if you have any questions and I can help you further.
If this answer helped you please mark it as "Verified" so other users can reference it.
Thank you,
James