Why does my Fountain show a "Water Tank Irregularity" in the Petlibro App?

Regarding the "Water Tank Irregularity" error in the app, please follow the steps below:
 
1. Ensure that the water tank is properly seated on the base, and verify that the pump rotor, pump cover, silicone water pipe, filter tray, and spout are all installed correctly.
2. When the water tank is positioned on the base, please avoid clicking "Weight Calibration" directly from the Device Settings page. Be sure to follow the instructions carefully.