Reaper Mythic skin locked despite finishing battle pass

I completed last season’s battle pass and reached tier 85 on the last day. Despite this, when logging on after the new season started the Mythic Reaper skin is still locked for me?

The last match I had where I finished the battle pass was buggy in that right before it was about to finish, the server crashed and an entirely new match with the same players was generated immediately. Also, I noticed that the battle pass didn’t say “Battle Pass Tier Unlocked” when I opened it after the match, it just showed it as being completed already. Maybe this resulted in the last tier not unlocking correctly?

you need to buy the reaper mythic skin you cant earn it from battle pass you get 80 mythic prisms in 1 battle pass and then you need to buy the skin separate