My App Testflight Public Link 404

This is My Testflight Public Link: https://testflight.apple.com/join/sgk30lEj

Click link, Display "NOT Found".

Now, I can't invite new users to my app's Testflight via the public link.

I contacted Apple. And as always they responded with some dummy helpless message.

Help me,please,thank you !

How to fixed it?

Found a way to solve it yet?

My App Testflight Public Link 404
 
 
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