Hi,
AEM 6.5.13
Step 1: Created Folder through configuration browser.
Step2: Enabled options as below as below:

Step3: Created GraphQL ENDpoint as below:

Step4: once we click on create button,
It gives us below message. I simply click on close.

PROBLEM STATEMENT:
When we access again this url (/libs/cq/graphql/sites/admin/content/console.html) to see list of ENDpoints,We see no Endpoint listed as below:

Regards,
AP