So don’t worry about your effort going unrewarded.
Battlefield 1 is now out, but it is one of the most popular games in the world t the moment- this means that if it has any glitch, error, or bug, that gets further magnified, since the odds of it being encountered by more people are now higher.
That holds true foe the Battlefest Tags, as an example- Battlefest Tags were to be awarded to certain players discovered themselves not getting them- and now Battlefest is over. According to DICE, however, this is a known bug, and players who were to have won these tags will still have them added to their group retroactively.
So that’s good- if you think you won a tag, all you now need to do is to go keep an eye on your profile, and wait for when your Battletag is added to your profile. Battlefield 1 is available on PS4, Xbox One, and PC. For more on the game, you can read our review here.