You could get no units from arena crystals in months and there still wouldn't be any rational reason to assume that there's anything wrong.
After the update of cavalier events,getting units from arena crystal become impossible.It is happenning with bith uncollected arena crystal and basic arena crystal.Do anyone having the same issue?
They already nerfed the 4 hour cryatals so that revives became extremely rare, so anyone who thinks they wont do it with arena cryatals is lieing to themselves, ive had numerous complaints wirh them the last 2 weeks from just my friends list alone.
Just run out of gold. As soon as you need gold from those crystals, the units come out in abundance