Hi, thanks for the reply. Following the link indicated by you (ipn history) I found no recoed in the list (even if I filter for the last 28 days). Also, when I log in in the developer dashbord, there is the following alert: "PayPal is migrating its Sandbox environment to the cloud. This could impact your integration. For more information, see PayPal status details." Also, if I authenticate with the credential of a test account, I have the following alert: "Something went wrong. Your sandbox account could not be linked to your developer account. Try again. If you wish to report this error please include the following error id: 66f54bd18a4d0" Maybe a problem with the migration to cloud? Antonio Gallo
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