Octopods needs to be installed from the Octopods dashboard here: https://app.octopods.io
Once you are logged in, click on "Add Intercom workspace", and then follow the on-screen authentication instructions.
When you already installed Octopods app but then deleted it for some reason - you just need to connect your workspace once again. Here's how:
Go to Workspaces → click on Add another Intercom Workspace → Choose your workspace → Press Authorize access