Mercatox Bad Exchange

[Whitefalcon]

bad exchange and bad support

I has put sell order helbiz ( HBZ ) at 21 sat
bid price 20 sat and ask price 21 sat
my order is only one order at that price
so logical if has trader buy at 21 sat so my sell order will decreased partial or all will be sold out
but my experience
2 times buyer buy at 21 sat
I has see at trade history



my order put



so my order first place at 21 sat and then buyer buy at that price
but why my sell order not reduced?
what buyer buy?
ghost?
wind?
that bug or cheat?