I have logged out of my organization on the My esri account by mistake, and I can't reconnect again, because I need a 36 character Token. I sent the request permissions many times, but I did not receive any email.
Please I would to re-connect my Customer Number to my organisation in My esri account.
I lost all the permissions that I had, like I can't download software and so more...
An authorized caller of your organization needs to contact your local Esri Support. The caller can provide your Esri Account (youness50) to be added to your My Esri organization, with required permissions/ privileges.
When you sign out of My Esri, you don't lose anything. If you were connected to an organization with certain permissions, like downloads, then when you sign in again, those permissions are retained.
Ensure you are signing in with the same username you used that had permissions.
If you no longer remember that username, then you'll need to fill out the Request Permissions form using the username you are signed in with in your screenshot.