PocketMine no longer supports Andriod (Unless you have a 64 bit device.) as 32 but support has been dropped.
i love how whenever you mention "Android" someone always jumps in to say "PocketMine no longer supports 32 bit". Many Android devices are 64 bit. This includes my Kindle Fire HD 8 (£80 for 16gb and £130 for 32gb). Many devices made within in past few years will be able to run PocketMine. While it may not be practical to host on a mobile device, it can be useful when developing on the go.
I think the point is that the majority of people wanting to run servers on Android usually have old devices, and are broke and can't afford a cheap VPS. 64-bit Androids only started really hitting production in 2015. 64-bit Androids prior to 2017 or so are a rarity.