Missing Mystic key on 5.3.4

Rasrlrana87765

I explored all the path on act 5.3.4 expect mystic key path.

i don't find any mystic key on the chapter.I don't know what to do for missing Mystic key. Can anyone help me to fix this problem?

SummonerNR

If there had been 3 mystic gates prior to getting to 5.3.6, you will get another key in that last quest.

If you already have that one, and the reason is that you accidentally lost a key by re-running the same gated path twice (so no more are actually available anywhere), then Kabam Support can help you recover more keys.