I booked a trip on Kiwi (4 flights):
Zurich > Oslo, Oslo > Tromso, Tromso > London, and London > Zurich
The last leg was cancelled. They suggest alternatives but there all very unpractical. Other (practical alternatives) are expensive.
What are my rights?
For those who are interested here is how Kiwi handled it:
I called them. They promised to come back to me within 48hrs and that I would not lose the "kiwi guarantee". I got a (blanket?) email ~1hr after ending my call with them. The content of the email was: (a) we found no alternatives for you (b) I lose my guarantee
I called them back on the next day. Calling them out on the fact that they had promised i would retain my "kiwi guarantee" (I also recorded the call on my end). Based on that they agreed to forward me to the somebody who would have a closer look at my case.
I got a call ~1 hr after from a friendly assistant who offered an option (extremely unpractical: Tromso - Oslo - London - Porto - Zurich) requiring a night layover for which I would need to pay ~40USD + accomodation.
How I solved the problem: I went to the easyjet website (the flight cancelled was an easyjet one), to "manage disruptions" changed the arrival airport from Zurich to Geneva. Cost 0$ and I fly out only one hour later
I now need to take the train from Geneva to Zurich - which is a very minor disruption in comparison with all the solution they offered.