Unable to use extensions in after effects after name change

[Minggus]

Hi, 
After my extension name transfer users are unable to use the extension, because it doesn't appear anymore when they navigate to window > extensions > WPP Open.DC AE template plugin. 

How can we fix this?
We already cleared the cep_cache folder and uninstalled the extension, but it didn't solve the issue.

[Minggus]

Any ideas?