@konradsyx Thank you for reaching out. There a few things you can try to get it up & working again.
Can you charge your Mudita Harmony? When you do plug it in, what happens?
Sometimes this happens when the batter is dead & E ink does not completely clear the display. When you are charging your alarm clock, please make sure you use a 5V, 2Amp charger.
We talk about the difference here: You can see pictures: