I finally managed to make it word but only on a windows pc. At fist when I installed the Logo!Soft Comfort the problem was not solved but after I updated from 7.0 to 7.1.5 everything worked just fine.
I still haven't make it work on Macintosh though I am still trying.
If anyone manages to connnect the Logo! with a mac, please let us know.
Thank you all for your help and time,
keep up the good work