If anyone is still watching this thread, I wonder if you could help me with what appears to be a discrepancy in their order accounting.
It is very frustrating.
I have made thousands of successful trades and I am shopping for a new exchange- Binance- Sept 12.

I tested a small order, because if there is any funny business going on, most people have no idea how to check for it in the accounting.

I moved over a little BTC to test.
I waited for it to up up a little.
I sold 0.002BTC

Then, I waited for it to go down, approximately 0.55%.

I bought lower, with the goal to see that with fees, it showed a profit in the neighborhood of 0.35%.
0.55% minus 0.2% fees = 0.35%.

Easy enough, right?

What it appears that their system did, is round the order literally just 3 units after the decimel.
So, that means selling 0.002 BTC and buying 0.002 BTC. In USDT, the buy order shows a lower amount.

Their admin help claims I should see the profit in USDT.
They also stated that in theory, it would be more decimels, but it only goes 4 units (3 after the decimel).

The question is whether it showed the correct profit in assets and just not in order history?
Screen shots, back and forth, and finally I was insulted and told I don't understand trading at all.

Imagine if that wasn't a test trade but $thousands?
Ask for proof that it is taking all satoshi's into account and get insulted?

BTW if anyone else is running into any of the issues I am, I've tested BiBox as well, and although I want to like it because you can save on fees, the bot trading really makes lower volume trading difficult. They are running a special on LINK with no fees, but a bot automatically trades 1 unit higher for every order. You can accidentally run up the value massively higher than the current going price and it will not enter the order. No trouble for larger volume coins, though other orders do go in ahead of yours.

Anyway, if anyone reads this and has something helpful, much appreciated.