Hi everyone.
My ubuntu one and ubuntu software center account, has a problem:
When i try to install non-free applications (the same thing happens if i try to buy a 0.00$ application) i get the 500 internal server error.
I tried to create a new account, and everything seems to work.
I need that account because I bought some applications and i don't want to lose them.
How could i fix my account?

Thank you in advance for your help.