I had issues with this today as well. Here's how I got it working in a new room:
To get it working in another room that my colleague created, I removed the Jira bot, waited about 15 minutes, re-added the bot, then followed @Ryan McLaughlin's instructions.
Hi, I get no link to click on. So I can't get the bot to work. Googling didn't help. Any clues?
Run all the step by step and the hangouts chat is working