Hi, I'm running raspbian stretch on a pi3. I thought this was 64 bit OS, but i'm getting the message: PocketMine-MP is no longer supported on 32-bit systems. Edit: It's a fresh install of raspbian, not a dist-upgrade.
afaik that's because the Raspberry Pi Foundation wanted to keep the same OS spread over all Pis, but you can always switch to another OS thats 64 bit. These links I found on Google might come in handy: https://www.linux.com/news/learn/intro-to-linux/first-64-bit-and-enterprise-os-comes-raspberry-pi-3 https://github.com/bamarni/pi64