The worst experience ever! We purchased tickets in June for flights in November (Belgrade-Tenerife-Belgrade), then we had to choose paid alternatives due to airline changes (disputed was return flight). It would be ok, if it was the only change. A month before our flight, we had to choose another unacceptable paid alternative with over 25hours for the flight from Tenerife to Belgrade. At the same time, they had a better offer for new passengers than for us (flights which last about 8hours). Directly, I asked for that different offer and they were professionally avoiding the answer. Somehow, they accepted to allow me to REQUEST other alternative and refused my request, of course. We decided to find solution on our own and I requested a refund from the disputed airline directly. As Kiwi purchased tickets on behalf of us, they received a refund of $140.40 (I have proof of it - airline sent me). When I told them about it, they refused to get my funds back, so the conclusion is that they stole my funds! I have to mention, they were trying to offer me their assisted refund and they didn't offer me a refund with Kiwi credit (I'm whondering, why?!) There are a lot of details that happened during our "communication", but I don't want to go on too long. AVOID THIS SCAMMER PROVIDER!  P.s. Take a look on proof of refund by KLM directly. Kiwi knows that and they declined to get my funds back.