Update (2020-03-26): If you’re on v2.1.5.2 or greater, you don’t have to follow these instructions. If you’re still having trouble accessing Netflix on TwoSeven, get in touch with us!
Recently, Netflix marked a couple of cookies with an additional flag: SameSite=Lax. This innocent-looking change completely broke the TwoSeven extension’s ability to embed Netflix.
You will need extension version v2.1.5 or greater to get Netflix to work. This version is already available on Firefox and Chrome. This post discusses cookies, how they work, recent changes to their behavior, and finally, what you need to do to get Netflix to work on TwoSeven.