Apologies that you are facing the issue for starting the labs.
I would suggest contacting the Learner Experience team by raising a support ticket at access.redhat.com (choose Product as "Red Hat Online Learning"). The team will be able to assist you in this issue.
Happy Learning and stay safe!
I have the same...
for me, the RH403, RH299 and DO447 doesn't start.
I opened the ticket 2 days ago, but it doesn't work yet
I see this:
"Labs are currently experiencing issues
We are currently facing issues in our Cloud lab environment and you may experience issues with your labs. We are working to resolve this quickly."