Btc options on okex. Who traded?

How are things going with the guarantee if all sorts of spreads and other centipedes are opened?
Is current profit/loss taken into account when calculating the coverage of a position?
Why am I worried - let’s say there is a call spread deep out of the money, the price sharply rushes towards the strikes of our design.
In fact, we are in a good plus, but how much do II understand that options are not marginable and formally there is no profit until the position is closed. And since the design contains a sold option, the price for it will skyrocket. In this case, won’t my short leg in a profitable position be closed on margin call?
How reliable is the exchange in general? Is it worth shuffling large sums through it?