It is network activated. When we add a new meta and click the “save” button we see the message “No changes found” and it does not save. I have seen the other reports of this and tried the suggestion to deactivate and re-activate the plugin but that did not work. I also found a suggestion to delete the _personalization table but I do not see that table in the database for the site. I also tried deactivating, deleting and then re-adding the plugin from the plugin repository with no success.
Further testing I found that I am able to add meta on the primary site, but I can’t add to any of the secondary sites.