Preface: Fluidd User Guide How To Control The Ender-3 V3 Using Fluidd Over A Local Area Network
After modifying the Fluidd mesh bed by myself, the program did not respond properly, leading to a system crash; issues of screen freezing and black screen occurred.
The current firmware does not support modifying the mesh bed.
Access the web interface of Fluidd, delete all configuration files, then shutdown and restart.