my reactive skins i have does not work after a kill

my reactive skins does not work these are the ones( lightning bug for volt and the r99 mystic coil) the only ones i have.

when i enter a match and  killl someone with the skins it does not evolve i have tried restarting still does not work tried puting a new skin on and put the reactive back and still no evolving after i get a kill.  but it only works in firing range no help!

i tried to ask what was going on to streamers and they said that they dont have any problem and they dont know so i need help!

ty