To be honest, this is something I’m not sure how to solve now because I’m not experienced in this kind of thing and not sure why you are still having the problems you are encountering. I can only suggest you review actual Google documentation on how this is done because it appears you need something specific that I thought was going to work…obviously not. Actually, it appears there are plugins that will help you out with structured data you might want to check out:
***Unless someone else has any ideas, I’m open to suggestions.
*Update: I just noticed in old posts on WordPress and even Google search, a lot of people get problems when they are trying to do the structured data and even when done right, many still have errors. I came across this post from about 6 months ago you may want to read through: