Got invited but with no code PC

I’ve gotten an invite from both my Gmail and Waypoint, but when I go to my Waypoint to see the message, there’s no code, instead it gives me a chart of minimum requirement specs and that’s in the place where the activation code should be, I was able to do last week’s flight so why is it different now? shouldn’t I had been able to receive a code through Waypoint? if not, then where? because I received a friend code and I rather not use it because I wanted to give that to my little brother and play it with him.

My specs:
I7 11th gen
RTX 3060ti
32 GB ram 3000mhz

i found mine in “halo insider” when you press your profile pic, and at the bottom is the code. atleast for me