App not correct with collection

[TRunner4_PSN]

So on the app, I go to inventory, filter, Not Owned, set the team, and set to Live series. The app says I need one diamond to complete the set. Well, I go to the game and I actually need 6 cards. I am doing nothing else to the filters. This is showing for many teams that the two numbers don't match. The first time I saw this was yesterday, didn't think much about it but today I was hoping to complete some teams and the App and game don't match. Does anyone have the same issue or know why this is happening?