bon j'ai eu un début de réponse du développeur
il semblerai que je ne sois pas le seul a ne pas arriver a le faire
unfortunately you're not the first one who has problems with the
database. I'm looking for the problem at the moment, as soon as I find
it, there'll be an update in the App Store.
The datebase for devices is only for informational purposes, so you
can see which devices was sending a packet in the monitor.
Regarding the translation: the translation is hopefully complete,
however it seems that some textfiles got lost while packing the files
for distribution in App Store. This will also be fixed in the update.