Hi
@mustafatiryakioglu 1.Do you pair steady charge with scheduled charging?
2.Do you get the notifications for steady charging and/or scheduled charging when you connect your device to the charger?
3.You can try clearing the cache of the PowerMaster app and reboot your device, then try again.
Go to system settings -> apps & notifications -> see all apps -> press show system in top right corner -> search power master - Storage & cache -> clear storage . Then reboot your device.