Alerts disappear after succesful creation

I successfully create alerts on "Documents Library" in my sharepoint web site, receive an email with the following text :

'admin' has subscribed you for alert 'Documents added to Eai' on'EAI-SOA'.

You will receive alerts according to the delivery method, timing and criteria that were selected when the alert was created.

You can change this alert or any of your other alerts on theMy Alerts on this Site page.

But in my subscription page my alerts doesn.t show and have the following message "There are currently no alerts to display. "