'secure_downloads' extension not working!!

What was the cause of the issue?

It seems that something is wrong with nginx configuration in secure download extension and page is also not working - https://extensions.typo3.org/extension/secure_downloads/

Steps to reproduce

Go to secure download page OR download any version of this extension

Output of error log

[Composer\Downloader\TransportException]
The 'https://typo3.org/extensions/repository/download/secure_downloads/2.0.3/t3x/' URL could not be accessed: HTTP/1.1 403 Forbidden

Add some screenshots

http://prntscr.com/gci699 https://extensions.typo3.org/extension/secure_downloads/

Awaiting for your reply here. Thank you in advance.

@eluceo