As per the reports, players are completing the required challenges to unlock reticles in COD Vanguard; however, the progression is not being tracked at all.
At first, some players thought that they were not doing it the right way as a Reddit user posted, "I’ve noticed that along with camo challenges not tracking correctly, that reticle challenges are not working at all. Is anyone else seeing them unlock?"
However, other players confirmed that it is a bug they are encountering too.

"I’m not sure why but none of my reticles are unlocking. It says to “get kills while ADS”, which I’ve been doing literally all day and not a single reticle is unlocked yet. Getting kinda frustrating. Anyone else? Recommendations?" another Reddit user wrote complaining about the bug.
The issue is persisting for both the zombie and multiplayer modes, as reported.
Players have been looking for an answer. At the time of writing, however, Activision has not responded to this issue. So, the only thing you can do now is report the bug on Activision's official support page and wait for them to fix it.
Don't forget to check out our dedicated Call of Duty section to stay updated with all the Vanguard latest news, guides, loadouts, tier lists, leaks, and much more.
Featured image courtesy of Activision/Sledgehammer Games.