Hi @Amiranda , unfortunately it is not possible to hide or change the URL (b2clogin.com) that appears when you are signing up with Google in Azure B2C. This URL is part of the Azure B2C authentication flow and cannot be modified.
Please let me know if you have any questions and I can help you further.
If this answer helps you please mark "Accept Answer" so other users can reference it.
Thank you,
James