Hi all! so I just started playing pvp to rank up to series 25 for the Archfiend coffer. Which sucks because I now realize the rewards reset for 6.2 and I only have less than a week to get 19 more levels. I saw on another post someone said once the series 2 rewards start we can use trophy crystals for series 1 rewards. But on another someone said they'll be gone for good. The first person said it was mentioned in the letter for 6.2 but I couldn't find it anywhere so I was wondering if anyone else had confirmation.