Haven't had good experiences using Kiwi buying Asian LCC tickets. They somehow own your confirmation number so you can't do anything with the airline - it all goes thru Kiwi - and their biz model is to lure you in with a price a few dollars less but really stick it to you when you need add-ons. For Asia, I've used Trip.com with great success (although I see now that Google Flights doesn't show their results somehow which is probably how I got roped in to a Kiwi purchase).