@Vogels7 

Hello,
Welcome to the community, and thank you for sharing the details of the charging issue with your Tapo C425.

As a first step, we kindly suggest performing a factory reset on the camera and then setting it up again in the Tapo app: How to Factory Reset Your Tapo Camera: Two Methods
After reconnecting the power, please check whether the charging icon is displayed in the app, which will confirm whether the camera is detecting the charging state correctly.

If the camera still does not charge and stops working once the power is disconnected, we recommend contacting TP‑Link Technical Support for further assistance. 
Best Regards.