Spaymaster Room doesn't drop Juatalotli's Medallion

since yesterday I have finished 4 rounds of temple run and it's riduculously 11 of my Level 3 Spymaster rooms didn't drop ANY lock medallion and becasue of this my temple is crushing!!! 2 weeks hard work are on the edge of going to ruin!

This is ABNORMAL!!! just a few days ago the lock drop is so redundant I can use 3 locks each run and there are still locks left!!! in jsut in my past 3 runs I only got 1 lock from Garrison room the spymster didn't drop ANY!!!!!

this is definitely a bug pls fix this ASAP!!!!