I managed to do everything and just like you suggested and everything is working.
I also have a mi remote and a dafang 1080, 360° cam. I managed to add both of them but unfortunately as you say I can't open the pages of both this items so I can't use them. I think that this is due to the fact that singapore sever won't let download plugins for sensors / items that are not supported.
I think that one workaround could be preloading the plugins into mi home app, but I am not able to do this. Any ideas?