maybe they'll reconsider expiration dates fairness from now on
I purchased the platinum track pass and after a few days I bought 4x 7 days boosts
paragon currently, i'm in act 8 on my way to become Valiant
playing for 4yrs so I enjoy opening crystals, that's why i bought stuff, rewards were more preferable at Paragon lvl for me, Milestone 84 is the only one providing something extra
well Milestone 84 only had 7 days in stash to be claimed and i had to take the loss and not lose Dazzler
below is the last official reply from Kabam:

this is not about whys and giving me advice on spending, it's about a transaction with unfair conditions as the track is still going for another 2 more months
this situation and the banquet made the 10th anniversary a complete miss