Can't connect to sandbox in graphacademy

Hi all,

I have enrolled in the course: Cypher indexes and constraints.

Lately I cannot proceed with answering the questions that require a sandbox because I get the following error:

This error appears in browsers: Brave, Google Chrome, Safari.

I have disabled addblockers, firewalls and shields. However the issue persists.

I tried connecting to a different account and the sandboxes work as expected.

It seems that for some reason I am getting connectivity issues due to my account.

Thank you