Login Loop from Mobile Browsers

We’re still actively investigating this issue, but we don’t have any new information to share at this time. Thanks for sticking with us as we continue to work towards a fix. We’ll get back to you with more information as soon as we find out more. 
 

We're investigating a new incident in which some users encounter a redirect loop after entering the six-digit login code when attempting to log into Slack from their mobile browsers. This only impacts logging in from https://slack.com/signin, and logging in directly from your workspace URL (https://example.slack.com) or from the app is unaffected.We'll provide an update within 30 minutes, including further details on current actions being taken.