Hello I am currently taking the "Pega 7 Fundamentals (7.1)" and the exercises won't start I get an error in chrome (ERR_CONNECTION_REFUSED). This worked fo the first exercises last week. So I went back to the first exercise and it throws the same thing, I cannot load any of them any more.

I tried from work using IE 11 (Everything was working last week until Friday)

******

I tried from home using IE 11

   - I tried adding "https://paex23-use.pegacloud.com" and "https://academy.pega.com" to the list of pop up exceptions

  - I go the pdn.pega.com and login

  - I click take a course

       - I land on the Pega Academy page with my recent items, but the main screen is showing me: "Registration Id or Email Address was empty" error.

     - If I enter my login information I keep getting this same error.

     - If I click on one of the item in my recent list it brings me to the proper page. I navigate to the page for the exercise and constantly get this error:

        - "This page can't be displayed"

******

I tried from home using Chrome

   - I tried adding "https://paex23-use.pegacloud.com" and "https://academy.pega.com" to the list of pop up exceptions

- I go the pdn.pega.com and login

  - I click take a course

  - I select "Tour of the designer studio"

  - I Navigate to the exercise page and whe I click on the "Open Exrecise System" I keep getting the following error "This web page is not available" with "ERR_CONNECTION_REFUSED"

PLEASE HELP AS I NEED TO MOVE FORWARD with this training!!!