You'll need to renew the account by paying another month or a longer period from what I am understanding you are writing.
Thank you very much for your answer! But when I am trying to pay another
account, it systematically asked me before doing anything my serial number
which I completely ignore !
2015-05-10 16:54 GMT+02:00 MW Design <firstname.lastname@example.org>:
In design problem created by MW Design
<https://forums.adobe.com/people/MW+Design> in InDesign - View the full
If you log into your account on adobe.com is the number listed there? Else like Steve wrote, chat with Adobe will be how to proceed.