Why Was My Take Profit / Stop Loss Order Cancelled but My Assets Are Still in the Portfolio?

This is the normal outcome of the OCO mechanism combined with a price reversal, not an error. Take Profit and Stop Loss on Pluang run as a One Cancels the Other pair, so when one of them is triggered to become active or execute, the other is cancelled automatically. What you are seeing is the first half of that sequence without the second. Your Take Profit or Stop Loss order touched its mark price, which triggered the order to become active, and the OCO logic cancelled the paired order at that point. But before the triggered order actually executed, the market price turned back the other way, so the sell never completed. The result is a cancelled order alongside shares that are still sitting in your portfolio, untouched and still yours. Nothing has been sold, and no fee has been charged for the order that did not execute.

• Why it happens: the OCO mechanism triggered on a touch of the mark price, but the market reversed before the sell completed
• The trigger is not the fill: touching your level activates the order; it still has to find an execution afterwards
• Why the pair was cancelled: under OCO, one order being triggered cancels the other automatically
• What it means for your holding: the shares were never sold and remain in your portfolio in full
• Costs: no transaction fee is charged for an order that was triggered but never executed
• What to do next: set up a fresh Exit Strategy on a new buy order if you still want automatic exit levels

Related questions:

Q: Have I lost my shares?
No. The whole point of what you are seeing is that the sell never completed, so the position was never closed. Your shares remain in the portfolio in full and continue to move with the market as before. The only thing that changed is that the Exit Strategy orders attached to them are no longer active, which means there is no automatic exit in place now.

Q: Was I charged a fee for the cancelled order?
No. Transaction fees on Pluang apply to executed trades, and an order that was triggered but never filled is not an executed trade. Neither the cancelled side of the OCO pair nor the triggered side that failed to complete results in a charge, so there is nothing to reclaim and no adjustment to look for in your balance or in your transaction history.

Q: Can I stop this from happening again?
Not entirely, because a reversal immediately after a trigger is market behaviour rather than a setting you control. What you can influence is where you place your levels: targets set at prices where the stock trades actively, rather than at thin or extreme levels, are more likely to find a fill once triggered. It is worth reviewing your levels before setting a new Exit Strategy.

Q: What should I do now that the orders are cancelled?
If you still want automatic exit levels on that position, you will need to set up a fresh Exit Strategy, because Take Profit and Stop Loss attach to a buy order rather than to a holding you already have. Until you do that, the position has no automatic exit and would have to be closed manually if you decide to sell.