"Requests from this IP are not allowed" Entra ID - external identities sign in/sign up user flow

I created two sites by following each tutorial article below to create a sign up / sign in user flow:

• https://video2.skills-academy.com/en-us/entra/external-id/customers/tutorial-single-page-app-angular-sign-in-prepare-tenant
• https://video2.skills-academy.com/en-us/entra/external-id/customers/sample-single-page-app-angular-sign-in

At the last step of account creation flow after entering the email address (I tried both Microsoft and Google email), entering the code and providing consent on Permissions requested by, I got the following message:

Requests from this IP are not allowed.

I also tried to run my app from two different ip addresses, so I don't think this has anything to do with my ip address.