MoxieManager TinyMCE

I have purchased MoxieManager and successfully set it up.

I can navigate to the moxiemanager-php-pro directory and see the UI below:
enter image description here

However, through the TinyMCE textbox when clicking to open the UI I see the below error:

‘Authentication failed. Server returned HTTP status: 0’

The only error I see in console is

‘TypeError: undefined is not an object (evaluating
‘moxman.ui.FloatPanel’)’