I don't know if many players took some shards for Deathtrap on PS4, but I did for buying some pets.
I took a 500 shards pack for 9,99E on the store, to get a common minion.
I was able to buy it for 50 shards, and short after (not sure when), I finished a map and my shards counter showed "???". (see image below)
From then, impossible to buy anything, neither to see my 450 shards left on the screen.
I can't even go to the store from the game, to try to buy shards again only to see if anything would unlock that glitch.
If anyone knows something about this, or if any dev' is wandering here, please help me cause I feel like I've been sc***d!