If the Ebsta icon no longer appears at the top of Chrome, you will need to check that the extension is still installed and enabled.
Ensuring Ebsta is still installed and enabled
1. Click the more actions button in the top right-hand corner of Chrome and select More Tools > Extensions.
2. Ensure the Ebsta extension is set to Enabled (as shown below). If it isn't click the toggle button to enable it.
3. If Ebsta is not in this list, it has been un-installed. To re-install it, follow instructions in this article: