This keeps confusing people and I understand because it is somewhat ‘unorthodox’.
The target is the sum of planned workouts and eventual week targets (this is the most confusing) for the week. So better not use both together and limit to one or the other.
The done is the sum of what is done in total + todays target (see below for more). If you do something outside of what is planned, it adds to the done and you will be over target.
If you have a workout planned for today, it adds to the done until midnight. If it is done and paired with the workout, it correctly shows the done. If it is done and not paired, it will count double until midnight. Once midnight, workouts not done are dismissed.
It all is quit confusing and your specific situation can only be understood when we get a view of what is planned, done and what eventual week targets you have.