While trying to add Custom CSS in the Theme Options, > symbols are converted to >. I did not have this problem with your Agile theme on another project.
I don’t have any plugins installed other than the ones required for the Wired theme.
I uploaded and activated the childtheme and it did not resolve the issue.
Custom CSS did not need to be moved to the childtheme, and I confirmed that the childtheme is indeed the active theme.
Yes. Specifically, the “Custom CSS” tab of the childtheme Theme Options was populated with the Custom CSS from the Wired theme when I activated the childtheme.