I am attempting to use this plugin as well a frew others.
I updated the php head and php footer docs per the error instructions, but WordPress still indicates the changes were not made.
I know the change made a difference because the Slide In plugin was not working, but began making the changes once the changes were made.
I do not want to use the Slide In option. I really want to use the Pop Up!
I also have a feeling that this is going to be a repeated issue with other plugins until the issue is resolved.
I appreciate any help you can offer.