When we release a new Extension maybe it will not effect on your side. You can get those extensions by Refreshing the Library using the “Refresh Extension Library“.
Once you install and activate AMP Pro Extension Manager plugin
This tutorial helps you how to install and use AMP Pro Extension Manager for this Click Here
Go to WordPress Dashboard -> AMP option panel -> Extension Manager
Once you entered the License key then you will see AMP Pro Extention Manager Activation sections. In this section click on the ” Refresh Extension Library ” link like below the screenshot.

Once you click on ” Refresh Extension Library ” it will automatically refresh the extension library and you will get new extensions.
That’s it for this tutorial!
We hope it helped you. If you have any feedback or questions, then please share them in the comments section below.