Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Fabrizio Crestani set the fastest lap, but did not finish in the top 10, so was ineligible to be the point-scorer for the fastest lap. Rio Haryanto was the point-scorer instead for setting the fastest lap of those finishing in the top 10.
Nathanaël Berthon set the fastest lap, but did not finish in the top 10, so was ineligible to be the point-scorer for the fastest lap. Stefano Coletti was the point-scorer instead for setting the fastest lap of those finishing in the top 10.
Nobuharu Matsushita set the fastest lap, but did not finish in the top 10, so was ineligible to be the point-scorer for the fastest lap. Sergey Sirotkin was the point-scorer instead for setting the fastest lap of those finishing in the top 10.
Sergio Canamasas set the fastest lap, but did not finish in the top 10, so was ineligible to be the point-scorer for the fastest lap. Pierre Gasly was the point-scorer instead for setting the fastest lap of those finishing in the top 10.