Yes, today I haven't recieved the daily Monthly Card kobans yet. I closed my webbrowser a couple times today but the pop-up message has not appeared on my screen and the 60 kobans aren't added yet either. Hmm, maybe a delay. it's 2:00pm for me here.
(Edit): Yeah, I think there is something wrong today with the Monthly Card. When clicking on it, it doesn't even show me the picture at all what pops-up and it is just totally blank. Not sure if everyone else has the same thing, but that is what I am seeing. Two hours later, still not recieved the daily 60 kobans from the Monthly Card.
(Edit2): Ok, nevermind I closed the firefox browser and restarted it. Went to Hentai Heroes and looks like the 60 kobans were added afterall as the balance is updated. But I still see a blank area when clicking on the Monthly Card icon. Seems the image is missing in the pop-up.