Error occurred while fetching metadata when trying to setup inbound email

Hello Everyone.
Iā€™m having problems setting up inbound email.

Flow:

  1. Clicked on my username at the top right.
  2. Clicked ā€˜Adminā€™.
  3. Clicked ā€˜Email Settingsā€™.
  4. Entered outbound email settings and successfully sent a test email.

To enter inbound settings, I repeated Steps 1-3 then clicked ā€˜Inbound Emailā€™.
I then get an error message ā€˜Error occurred while fetching metadataā€™

Upon reading this article:

I thought Iā€™d follow a similar diagnostic route.
After setting the APP_ENV to qa, here is the Network output in my browser.

I double clicked the graphql element and it showed:

  1. return;
  2. }
  3. ``
  4. $value = $event->getRequest()->headers->get($this->headerName);
  5. if (empty($value) || !$this->csrfTokenManager->isTokenValid($value)) {
  6. throw new AccessDeniedHttpException('Invalid CSRF token');
  7. }
  8. }
  9. }

Iā€™ve tried the same process on 2 different browsers with the same error.

Any ideas whatā€™s happening please?
Thanks
IDAK

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