This free version of the plugin does its job just fine – many thanks to the author.
But for privacy reasons, I’d like to disable the ‘VisitorContactInfo’ part of the purchase event’s DataLayer. That part holds personal information about the customer that I don’t want to send to Google, and moreover it’s probably illegal in the EU to do so.
In fact, I’m not reading anything about a ‘VisitorContactInfo’ part of any DataLayer on Google’s support pages. So maybe this isn’t an official thing? If not, then I would recommend getting rid of it entirely.
If it should be there, then I think a WordPress action or filter would be ideal for making it optional, or else a checkbox on the settings screen. This would be great for both the free and paid versions of your plugin.
I hope you will consider this for your European / privacy-minded users. In the meantime I’ll remove the ‘VisitorContactInfo’ part manually from the code for now.