Problem to apply the TDI

Hello,
I try without successfull my apply for TDI in March in France. The deadline is Oktober 15th. Il fill the first page, but every time, when I send the page, I have a message about my adress mail.

“Please use your primary email address, as we will use this email address to communicate all program information to you. The email address you provide is also your USER ID, so please make note of it. If you do not provide a valid email address, we will be unable to process your application.”

I worry because the dead line is near. I sent 3 mails, a call phone and I haven’ t an answer.
Could you help me?
Thank you very much,
Best regards
Caroline Roeser