1 / I try to contact Dave but no respond...Very buzy i think.

2 / Thanks for your solution, i will try it today i will let you know. I think it can work like that. I'm sure i can recover my password, it's just a problem of making the password.txt right and put the good infos.

3 / I know that's strange for my seed. I try to swith servers, i try everything and nothing works... And I'm sure about the seed because like i said, i recover one of the btc adress. It's green on the corner everytime.

Thanks again for your help, i hope i will have good news later.