We do not provide ROMs. You need to get the ROMs yourself. If you don't know how, we recommend looking for guides on Google or Youtube.
To import or change a ROM, you need to go to "client management" in the login menu.
If you are trying to import or change a ROM and are getting an error, you can see below how to solve it.
You might need to enable the MIUI optimization in the developer settings.
Try moving your roms to a different storage (external/internal) and different folders. Some devices might have different permissions settings which will block PokeMMO from accessing the storage type or folder the roms are in.
Try enabling the alternative file selection method clicking in the settings icon in the rom upload screen.
ChromeOS:
If none of these solutions help, contact our support.