Thx @mfikes I'll try with Android emulator.
@mfikes FYI, no success for me.
To be sure if it's you recommanded, here is the step I did :
1. Launch Krell REPL in terminal clj -m <http://krell.ma|krell.main
>
2. npx react-native start
3. Turning off the WIFI on the host machine