The transition to NetApp MS Azure AD B2C is complete. If you missed the pre-registration, you will be invited to register at next log in.Please note that access to your NetApp data may take up to 1 hour.To learn more, read the FAQ and watch the video.Need assistance? Complete this form and select “Registration Issue” as the Feedback Category.
I think you need to have a non-guest user account to download simulator, or an account which is still a customer with NetApp.
Note: If you are not a netapp end user or does not own a Netapp device you can create a guest user in support site but the Guest' access for the online support site is restricted to basic product documentation. This level does not allow access to any support tools. To download support tools you need to be either have these kind of account NetApp Customer / End User NetApp Re-seller / Service Provider / System Integrator / Partner. https://community.netapp.com/t5/Simulator-Discussions/Download-link-for-NetApp-Simulator/td-p/122566