Why do Chest keys no longer open massive or legendary locked chests

I have some chest keys and noticed that they will no longer open unlocked chests except for those legendary locked chests that use 5 plat to open. Even tho I have chest keys it takes plat now to open the locked chests. This is so sad that you did this, rip anyone buying chest keys to sell as now they are all worthless unless this is only for those ppl that earned the chest keys. It's another example of you making ppl buy plat to do anything in the game. I don't recall seeing in content changes you doing this.