i have done mission 2, and now i i am at mission 3

artifact mission:

upgrade 6 offense artifacts equipped on a rare ATK type champion to lvl 4 or higher.

i have done this, but the mission is not complete, and now im stuck there, because, i see now, that i have done every mission after that, too, but they arent unlocked so now it is impossible to complete those missions again.

 i hope u can follow me.

i already did those missions before unlocked, because i missed 1 !! mission.

i hope u can code this program, that the program knows, if u have did the challenge before, u get the reward. because as i said: im stuck now, bcause of this.

hopefully u can understand my bad english and my problem:

i cant play the game without the missions, because the rewards are so good, but i cant do the missions right now, because im stuck at mission 3 and as I said: ive done it, and i have also a screenshot, but the mission is not done =(((

please help.