If your CRM Administrator changes be sure to have your new CRM admin invited as a user in Leadfeeder. Once they have accepted the invitation and logged in they can reconnect the CRM and get the admin updated.
Step 1: Navigate to your CRM settings in Leadfeeder under Settings > Website > Integrations. Select your CRM (it should be listed) to go to the CRM settings page.
On that page click 'Reconnect'.
Step 2: On the connection details page you will see the current settings. Click 'Reconnect'. Follow the prompts and logins and your reconnection and Admin update should complete!