sharepoint online – SPO Event Receiver not firing

Recently I am not able to create (remote) event receivers in my SPO environment(s).

  • Create new site
  • Create new list
  • Add event receiver using PnP.PowerShell
Add-PnPEventReceiver -List "test" -Name test -Url "https://webhook.site/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" -EventReceiverType ItemAdded -Synchronization DefaultSynchronization

Noting is triggered on the listener. Tested on different tenants and with different listeners (webhooke.site and Azure Function). Anyone else facing this issue?