In some cases you might have installed the CallBlitz Chrome extension, but due to your organisation’s IT policies the extension did not receive sufficient permissions to function properly. In that case a manual step is required to give the CallBlitz extension full permissions.
1. Go to your Chrome Extensions page
2. Find “CallBlitz” and click on “Details”
3. Find the section for “Site Access”
Change the “On click” value from the dropdown to “On all sites”: