Every fill carries a cost, and it is made up of two separate components. Both are charged per side and per contract, so a round trip is charged twice, and a ten-lot costs ten times a one-lot.
The two components
The exchange fee. Set by the contract itself. This is the same for everyone trading that instrument.
Your firm's commission. Set by your firm, per side. This is their charge, not Hyperprop's, and it varies from firm to firm.
Both come out of your balance at the same time as the realised profit or loss on the trade, so your balance already reflects them.
Why costs matter more than they look
Because charges apply per side and per contract, they scale with activity rather than with profit. A strategy that trades often in size pays materially more than one that does not, and that difference is invisible if you only ever look at gross P&L.
This matters on an evaluation, where the profit target is measured on your balance, and fees have already been taken out of it.
See them in your journal
The trades table lists the fee and the commission for each trade as their own columns, so you can see exactly what a given trade cost.
The journal also has an include fees toggle. Turning it on recalculates every figure on the page net of costs, not just the total, so your win rate, profit factor and average win and loss all reflect what you actually kept.
Comparing the page with the toggle off and then on is the quickest way to see what your trading actually costs you.
Who to ask about the rate
Commission is your firm's setting, so questions about the rate belong with them. Hyperprop applies whatever they have configured.