Stickup battery cam without live view, detection or notifications after low battery and recharge

Hi, So, one of the stickup cams on battery isn't functioning after this weeks low battery notification. I removed the battery, charged it until the led was green again and re-inserted the battery. After this, the blue light comes on for ~5 seconds, and then turns off. The cam is listed, but non of the functions, like live-view, actually work. (a message appears that the battery is crit. low) Within the app, the health status reports all OK, except it doesn't show a battery percentage. It's either NaN or battery level unknown. Things I have tried so far: - Swapped the battery with another camera. This device works then perfectly. This rules out the battery. - Reinstalled the app, same results as before. - Removed the devices, reinstalled the app, add the device, same results as before. - Remove the devices and added the device without reinstalling the app in between, , same results as before. - Re-charged the battery once again, same results as before.   I am running out of options here. Perhaps someone here was a nice idea on how to activate the camera again.