I have two issues, and they are probably linked.
1. I have created a form in CSS Forms and linked to UE4. Everything works, except that the information selected in either of my two lists are not included in the email that is sent.
2. The list themselves show a validation error and then lock up when they are selected in order. If they are selected first (out of order) they do not show the error.
I have used UE 3. doing the same thing and have not had a problem.
Here is the zipped files. I tried achieving the same results using radio buttons and they work fine. I can't figure out where I've gone wrong.