Hi Stefano
If you want to get access to Compact (and other newer tags) on the template used when creating a survey from an existing feature service - you must ensure that the following file is deleted before you install a new version of Connect:
XLSFormTemplate.xlsx
In Windows you can find the file here:
C:\users\XXX\AppData\Local\Temp
Currently the app will not overwrite the template with the newer one contained in the installer (we will fix this).