The Trial characters delete time is 1 day, the whole point of Trial is to "TRY" other classes, maybe reduce the Delete time to 3m like seasonal or at the very most 30 minutes so you can try a new one out classes more often.
Install the Black Desert Launcher if the game doesn't start.
The launcher will appear if it's installed.
If it doesn't, try to run your downloaded launcher.
1 Run BlackDesert_Installer_NAEU.exe to install the Black Desert launcher.
2 Start the game once installation is complete.
The Trial characters delete time is 1 day, the whole point of Trial is to "TRY" other classes, maybe reduce the Delete time to 3m like seasonal or at the very most 30 minutes so you can try a new one out classes more often.