Here's the latest reply I got from IRCC on the issue of access to the test for those scheduled Jan 20th:
"
Good day,
We are aware of a potential technical issue with your online testing link. We are working on a solution and you can try again tomorrow to see if It's solved
Our apologies,
Thank you
Online testing technical support / Citizenship and Passport Programs Branch
Immigration, Refugees and Citizenship Canada / Government of Canada"
"
Good day,
We are aware of a potential technical issue with your online testing link. We are working on a solution and you can try again tomorrow to see if It's solved
Our apologies,
Thank you
Online testing technical support / Citizenship and Passport Programs Branch
Immigration, Refugees and Citizenship Canada / Government of Canada"