The two bracket types
ProjectX has two kinds of brackets:
Position Brackets: you set the TP and SL as dollar amounts. ProjectX creates one TP and one SL for your whole position, and updates them as your position size changes.
Auto-OCO Brackets: you set the TP and SL in ticks or dollars from your entry. Each entry gets its own bracket, which is useful if you scale in and out.
ProjectX as leader
You can use either bracket type on your leader. Once your entry fills, your TP and SL are copied to your followers as separate orders. When one fills, Tradesyncer cancels the other.
ProjectX as follower
ProjectX followers copy as Market Execution: they enter and exit with market orders, and get no TP or SL from Tradesyncer.
Turn brackets off on every ProjectX follower:
Open the follower account's settings in ProjectX.
Set the bracket type to Position Brackets & leave the TP and SL fields empty.
Or switch to Auto OCO Brackets and do not create a setting.
If a follower still has its own bracket settings, ProjectX adds its own TP and SL every time Tradesyncer enters a trade. Those don't match your leader's, so your follower can exit at a different price, or twice.
Related
How bracket orders are copied: the full overview of every platform combination.
Follower Protection: recommended, since ProjectX followers have no TP or SL on their own account.