I bought the predator battle pass yesterday morning.( it was pre level )

I collected everything, going a bit through predator lvl up proces and log out for couple hours. 

i came back and start working on " HellFreak " and i realise that the battle pass set just vanished out of my inventory. I mention that i was about to lvl the set up or at least couple pieces ( it was trash as  options but still a mythical set ) so i sell some of my 4* and 5* trash slayer items. When i try t o upgrade it I realise that he vanished out. 

I didn't sell it, i didn equipped on any other trash champ, and i use the filter options good. 

Can someone help me out?

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