Not getting login stamps anymore?

Hello, newer player here. 🙂

So I was getting login stamps reliable for a couple days but it appears to have stopped? For the past couple days now it just doesn't pop up when I log in. I've tried switching blocks, going to my PQ, but nothing seems to make it pop up. Any ideas why this is happening? Or am I missing something?

depending of the hour you log in the stamp won't be counted and if you are online before that and are still playing when the reset of the stamp card happens it won't show up but you will still get the rewards, also if you want to check if you are getting the stamps go to the option menu and open the information tag to see the stamp card info