I've never had an answer by emailing them. I suggest calling them and then leaving a callback number. They got back to me on the same day.
Hi, I can't call them because I'm French, and it's written on many places, "for US resident only !!!! Then....
There are many errors with the Losi Software, they said in the manual : you can adjust motor timing but "low" and "very high" don't exist in the options !!! I have already send them emails about those issues, and never had any answer too...
I think I understand now, if you are not american and have a problem with Losi Electronics, it's fit for the dustbin !!!!
Thank you very much HorizonHobby!!!
I don't understand why whe can't talk to Losi devellopers or manufacturers, but with a distributor ! I have never seen that.