The use of active content in listings, including JavaScript, Flash and form actions can inhibit purchases on mobile devices and can lead to abuse in the marketplace. In 2017, we’ll limit the use of active content in all new listings across all devices and it will not appear by default. Later in 2017, we plan to remove or block listings with active content. We encourage you to limit your use of active content now.

Best get to work, is my advice.

http://sellercentre.ebay.com.au/ebay-for-business/mobile-listing