Help/Support One-Hit Kill feature doesn't work

[Blackfrost 3 iPhone 7 12.1.2]

Hi guys, I'm using an iPhone 7 running IOS 12.1.2 jailbroken with unc0ver. 

I've installed the Joka's hack for Darkness rises game ( here the link) but the one-hit kill feature doesn't work in pvp.. I've put a high custom value but the enemy doesn't get killed instantly as he should. Is there a range of acceptable values? Anyway I just want to report also that the "no skill cooldown" feature doesn't work because  in offline mode the character doesn't use the ability after the first usage (only the counter disappears) and in pvp the game crashes.

Thanks in advance!  @Joka