Edit: It was just a syncing error that eventually fixed itself.
I just crafted my first legendary gear so I finally got the Level Up Gear quest. Since I have done the other stuff before, I was able to claim all the quests up to Level Up Primarch III.
However, instead of getting a new quest, I am able to continually claim the the 500 diamond reward on the Level Up Primach III quest. At first I thought it wasn’t registering that I was claiming the reward. But after claiming it a few times I do notice my diamond count keep increasing.
What should I do about this? I’ve stopped claiming the reward because I don’t want to be accused of cheating but I also would like to be able to continue with more missions.