Hey @SlackHQ - your popup for "download slack for linux" is only showing the "yes" and "i'll do it later" options. Maybe you need to fix your option list rendering so it renders the third one too. Give me a poke if you need help debugging this.
Sorry for the trouble! The "download slack for linux" should go to https://slack.com/downloads/linux -- since there's 2 flavors of linux and we can't tell which one the user is on, so we we just redirect them to that page for them to choose. If you're not seeing that let us know!