Hi. I own a 8BitDo SF30 BT Pro pad, i managed to connect it to my RPi3B+ bluetooth with D-input mode (Start+B). See the manual if required. I didn't manage to connect it with the USB cable lol It doesn't work.
Yes, a few times, but, I already used it, and to be honest I didn't need to restart ES in these situations, but I also didn't see anything reported here on the forum until now.
Your system installation process is apparently correct, but I need to ask a detail:
You claim that the first boot works, and after restarting, it no longer works... Is the system creating the SHARE partition correctly on this first boot? Did you transfer your ROMS to Recalbox, restart, and were they still there?
Are you connected to the network via cable or Wi-Fi?