I believe the feature is still there but I don't know how to enable it with the updated wallet. Try contacting the support team in their Discord channel and I'm quite sure that they will be able to help you on that.

By the way, the swap went smoothly from my side and I received my coins (with the additional reward) in about 15 minutes without any issue. Must say that this is one of the swaps the I experienced with no hiccups along the process.