If a tool won't connect, or keeps dropping after it's connected, try the following:
Reconnect it. Go to Integrations in your dashboard, remove the connection, and add it again — this resolves most token/permission issues.
Check permissions on the other side. Some tools (Google, Microsoft, Slack) revoke access if your organization's admin settings change — check with your workspace admin if you're on a managed account.
Check for an expired session. Long-lived connections like calendar or email sometimes need re-authentication after a password change on that service.
Still not connecting? Contact support with the name of the integration and what error (if any) you saw.