Hi paulohenrique,
Kindly confirm that you have already installed Jobroller theme as it is needed by Simplux child-theme in order to work.
Cheers,
Jomark
Please help our moderating team work more efficiently by not sending us support questions via PM. You can read more about how AppThemes support works
here. However, you can send a PM to follow up and remind me if I missed your support request/thread.
Thank you and have a nice day.