Applying WAUE to a form in a menu...
Apply the UE Behavior to the action page, that way you won't have to apply it top the include page and can bypass whatever is causing the problem.
Hi Jason:
There appears to be some kind of validation that is CSS triggered which causes the form to display "Something went wrong. try refreshing and submitting the form again." I've contacted the author of the Mega Menu code to see what's going on there. I did try creating a menu with the WA CSS Form Builder. More notes in the Private Message area....