Hi John, We are sorry to hear that your control board was not compatible with our WIFI model of the EasyTouch display. We try to publish the most accurate information for our customers to make an easy decision for purchasing, one method is our EasyTouch Model Selector (located just under the product image) as well as listing compatibility charts. In reference to your quote, “Nowhere did I read that the WiFi only works with specific control boards” We appreciate your feedback and are always striving to make sure you have the most accurate information possible. Never hesitate to contact us through our online support form or email, our team is always available for clear solutions and or recommendations based on your needs.