@mlocati thank you for letting us know. I wasn’t able to reproduce with my account, so this is most likey a permissions issue. I’ll try again with a test account and create a ticket.
Thanks
Jess
There was an issue with the WAF blocking some requests that have a lot of PHP code in them. That has been fixed now. I checked the preview on that page and it seems to work now. Let me know if you ever run into this issue again.