I’ve escalated the ticket for you, but it’s the weekend now 
Could you also please send an example of a resource on dash.cloudflare.com that 403’s for you? With the cf-ray header, you can find it in the chrome network tab
Make sure you click the “Preserve log” checkbox to show requests that happened before form submission
It should look like this:
Just make sure you only share the cf-ray, and nothing else as requests to dash.cloudflare.com will probably contain sensitive information