Stupid bug again

I play horde, 35 waves to complete a challenge of beat 35 hordes,it took me more than an hour to complete and I played alone form wave 29, I completed the medal of headshots and all 35 waves and that God dam sht just count me like 30 headshots and only 7 waves like WTF, all the time wasted like sht

the coalition plz fix bugs ffs I didn’t pay for ultimate edition to face bugs