I was trying to enter some of the hidden glyph codes on the Waypoint app on 360 and a few of them didn’t work for me. Specifically, the codes for Day 1, Curious., and the one that unlocks the Orbital armor skin “Yanumas”.
I referred to this page as my source for the codes: Section 3 Archives | Halo Alpha | Fandom
The codes are alright. Sometimes the app is a little buggy, best thing to do is close it and try redeeming the codes again.
The career milestone counter is broken showing 0 for me. It’s unfortunate because I completed 22 Halo 3 achievements this week and wanted to see the change there and in the cross game decorations which are broken as well. I’m not holding my breath that this will be fixed soon or ever.