'Why can't I post a question in AWS re:Post?

This is really driving me crazy.

I have signed in https://repost.aws/questions/ask.

I was able to click "Ask Question" button and edit my question.

But in the end, there is no response when I click the "Post Question" button.

why the button fails?

I checked in the developer mode, and saw this error:

Request URL: https://repost.aws/api/v1/content/validateText
Request Method: POST
Status Code: 403 
Remote Address: 13.226.77.78:443
Referrer Policy: strict-origin-when-cross-origin

Why is AWS stopping a registered customer using their website?????????



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