Hello, PabloRodriguesdoNascimento ,
With a premium subscription, you will have the opportunity to create 3 units.
You may have encountered this problem yesterday, we had a small glitch that we quickly fixed. Please see now, if you have purchased a Premium subscription, then you will be able to create 3 units!
Also you will get 100 MB for each unit and a lot of additional functionality.
If your question is not resolved, write to us at firstname.lastname@example.org, we will try to help!