I can't start the service launcher on my Xiaomi device

First, make sure you have:

• A SIM card inserted
• An Mi account

Reveal Developer options by going to Settings > About > then tap the MIUI number 7 times.

These will be in Settings > Additional settings > Developer options.

Activate:

• USB Debugging
• Install via USB
• USB debugging (Security settings)

Also, check that your USB configuration is set to ‘No data transfer’.

Then run the service launcher after opening the GameBench app.