I would like to make the same request.
MiWiFi is a modern router with built-in NAS in two versions: 1TB or 6TB. The device is made by a rising brand in China called Mi which has gained humongous popularity. It comes with iOS, Android and desktop apps that provides access to the NAS. But for whatever reason the desktop versions only provide access in LAN mode, which effectively kills off the cloud storage capability. Many users are disappointed and are searching for alternatives. The first reaction is to create a VPN, however China being what it is, all ports are blocked thus making it impossible with VPN solution. Right now the solution is Syncthing which is a breeze to install, but it doesn't support iOS. A lot of people would be interested in BT Sync with iOS client to backup Camera Roll.
For me though, it doesn't have to be a plugin. There are two install versions supporting ARM and ARMHF, but none of them works. I always get the -bash: ./btsync: No such file or directory.