Unable to see GLOBAL SITE TAGS

Hello Support,

I am trying to display global site tags on my homepage.

I have installed the following plugins;
Post indexer
Global site tags
Global site tage widget

I can see post indexer working, as there is plenty of statistics

However, I can't seem to get global site tags to display on my site. I have also tried the widget, and I receive the message where the widget is on my homepage "There are no tags to display", yet I know there are.

I have tried switching to the default 2016 theme, and still not able to display the global site tags.

This is a WP Multi-site, and as far as I can see everything has been setup correctly.

Any help on how to resolve this would be great.

Many thanks for your help and support in advance.

Regards,
Kriss