This is not related to the cookies but rather some issue since the last version.If you access the direct instance name e.g. https://test.campaign.com it would redirect you to the login pageWhen trying any sub-path, e.g. https://test.campaign.com/view/home, the page would only shown if you logged in before. Else the error is shown Some tickets are already logged with support.If it affects your instance, you may raise a ticket or else wait for a global fix to be deployed.