SAP IQ Express 16 report license error after 30 days. But Express is not Trial, so why is there this license error?

Hi all,

       on 17/01/2014 I installed SAP IQ 16 in Express Edition mode. 

I understood that Express Edition is not time limited (like 30 days trial edition), but it is limited in datatstore size (5 GB for datatstore).

Now, 30 days later, the following error is reported in log files during startup.

..

1. I. 02/17 11:18:54. Transaction log: iqdemo.log
2. I. 02/17 11:18:54. Starting checkpoint of "iqdemo" (iqdemo.db) at Mon Feb 17 2014 11:18
3. I. 02/17 11:18:54. Finished checkpoint of "iqdemo" (iqdemo.db) at Mon Feb 17 2014 11:18
4. E. 02/17 11:18:54. Error: No SYSAM License Available

1. E. 02/17 11:18:54. No SYSAM License Available
2. I. 02/17 11:18:54. Database server shutdown due to startup error

...

Just to give you a complete problem vision, hereafter I report the screenshots used to install the SAP IQ Express Edition.

Are there something wrong in the installation process described above?

Do I need to request a specific "Express license" to use IQ Express Edition? How can I do that?

Thank you and best regards,

Stefano