I bought the premium battle pass and I ‘‘got’’ 2 of the legendary lootboxes I already had the level for, but I was only given 1 out of them and the other one is nowhere to be found
It’s because 1 of those 3 boxes are actually in the FREE battlepass. It’s the one in the middle, the one that was somewhere between 40 or 60 tiers, I can’t remember exactly. And since you already reached the level, you’ve received it previously and probably opened it. Only the first and last box in the battlepass are for the paid version.