You can use DEMO version till you reach 50 monetary units. When you reach this limit, you have to put registration code to register the program.
We have 4 different daily limits: 30, 50, 70, 100, the limit depends on your package. It resets every day at 00.00.
In case you have registered the program with package 30 or 50 you will get immediately after registration note: your daily limit exceeded.... You have to wait one day and the limit will be reset.