Halo 3 insider invite - But i opted out?

Games Other Halo
1

I opted out for PC flighting for the insider program, but I got a steam code invite. I don’t have steam? I am very confused

2

Nothing to worry about, everyone was invited to the PC flight, even if opted out. (source)

3

Closing in favor of this thread and the tweet mentioned above
https://www.halowaypoint.com/en-us/forums/243780d3b80b4bb6ac7917a8942286db/topics/invited-while-not-opted-in-for-pc-flighting/82e0b205-4d5d-4d2a-81f9-68f4993a8a91/posts