Thanks for the reply, Joachim. After further testing, it seems to be an issue related to responsive and in-article ads. Unfortunately, I’m still unable to determine how to work these into the site. I’ve set fixed size display ads and can get them to appear, but cannot get any responsive type ads to show.
When I check the script errors, I do see the adslot=0 issue showing up. I’ve tried to follow the online documentation and potential fixes, but nothing seems to be working. I didn’t have this issue until upgrading my theme and Elementor to the latest versions. I suspect that I may need to modify some code somewhere within those to fix, but really not certain at this point.