Your open orders stay open longer than expected when a max open time setting is being overridden. There are two things to check.

If you use Config pools, they have their own max open time settings that override your Base config. This means any changes you make in your Base config won't take effect as long as a Config pool has a different value set.

Open your Config pools and check whether a max open time buy or sell is configured there. If so, update it to the value you want.

If you don't use Config pools, open your Base config and verify that the max open time buy and sell values match what you intended.

If both settings are correct but orders still don't close at the right time, contact support via live chat or [email protected].