Unable to grind purple class mods after latest update

I can’t seem to grind purple class mods anymore after the latest update. Not even moonstone grind. The game doesn’t freeze either. It just plain doesn’t work let me grind anymore. I can grind everything else just fine though. Any word or help on this would be much appreciated. Note that I do have the compatibility packs installed. And yes I have tried uninstalling and reinstalling them.

having almost the same problem can’t moonstone grind two gold and one purple.

you can’t grind them that way.

has to be 3 of the same color.