The nets in each PCB Module should not all be the same. They should be distinguished by the Schematic Module prefix that you assigned during their placement in the schematic before creating the PCB with the corresponding PCB Modules. Maybe you need to reread the Tutorial sections on Schematic and PCB Modules: [https://docs.easyeda.com/en/Schematic/Schematic-Modules/index.html](https://docs.easyeda.com/en/Schematic/Schematic-Modules/index.html) [https://docs.easyeda.com/en/PCB/PCB-Modules/index.html](https://docs.easyeda.com/en/PCB/PCB-Modules/index.html)