When re-entering a saved lab, you should re-launch the activity from the Onboarding page
If you are re-entering shortly after leaving, you may see this screen:
To re-gain entry, you will need to refresh the page
1) Close the page and return to the onboarding activities page.
2) Refresh the page
3) Start Activity & Launch the Lab
The lab should reopen for you
If you continue to have problems, please contact one of the team