Cannot reduce liquidate-and-block number. Error: "Failed to set personal daily profit target: PDPT Value is below minimum."

If on trading day “A”, my liquidate-and-block number is reached and thus my account is blocked, I currently cannot reduce that number between that moment and until the re-open/ But, that seems like a bug and not the intention of the feature. Example:
I set my liquidate-and-block number to 4000. I then hit 4000 and my account is temporarily blocked. If on the next day, I only want to block at 3000 instead of 4000, it will give me an error: “Failed to set personal daily profit target: PDPT Value is below minimum.”