Cast on Critical, dont grow up

First im sorry for my english.

Since last week when i confront a boss fight my cast on critical dont grow up, nothing, so i cant use sniper mark and other skills y that buff.

I dont know what happen, because 2 weeks ago works fine...

With minion on maps i have no problems, and mi critical its 100% so, i dont know if COC have a bug o boss or something change...

Pleas try to answer me please.

Thank you for your time.

First thing to do is double check you're not using any unique or support that stops you from getting critical hits. I've made that mistake before.

I do criticals all the time, is in boss when it cant grow up, so, how i can to know if theri is any that desactivate my critical only in bosses?

Maybe the sacred flame (new item i have), but only in boss fithg? its rare...


ok i proveed swap the cetre and its not that, so i dont know if only if to me or what...