From the picture your box is a rebranded m8s pro+, as indicated by the board markings.
In googling I have found the following like that shows someone being successful at installing Armbian (http://www.galipe.net/guide-mecool-m8sproplus-armbian/). (article in French, I used Google translate)
So it should be possible.
While those instructions are old, they show that it should work.