code – Any thoughts on why this client’s website has suddenly become riddled with Google Ads?

Here’s a link to the site: http://www.blairlogie.org/ (turn off your ad blocker to see the offending ads obviously)

I want to be clear that I did not build this site and have simply been asked to remove the Google Ads and make some minor text changes. Here’s what I do know:

Those are the main things. My initial thought was that it was a plugin that went rogue but having the ads remain after deactivating kind of eliminates that possibility. My second thought was that the theme creator decided to mess with the theme.

The plan is to burn down this abomination and start from scratch but for the time being, I just need to make this fix. Any thoughts on what might be happening would be appreciated 🙏