Late yesterday Apple broke many sites around the world on their Macs and using Safari by invalidating many viable and widely used security certificates. This affected us and thousands of sites across the world. In fact, some of our team members were not able to get into Slack for more than 24 hours.
We solved the issue earlier this morning with new certificates and found a way to force the browser to refresh them as Apple was caching the old and broken ones. You should be all set with this now.
To read more about this you can go here:
https://news.yahoo.com/lets-encrypts-root-certificate-expire-180027720.html
You can now select what page you want to start on. The default is the Send Broadcast page, but if you prefer you can select any of these three items:
It's your choice, just go to the Settings -> General tab and scroll down a bit and you'll see the Start Page setting and pick. your poison. Enjoy!