additionaly:
The document is not an acceptance letter.

It is an official Student Enrollment Certificate issued by the Council of Higher Education of Türkiye (YÖK).

The document explicitly states:

• Öğrenci Belgesi (Student Certificate)
• Aktif Öğrenci (Active Student)
• 4. Sınıf (4th Year)
• İstanbul Üniversitesi AUZEF

The QR code on the document can be used to verify its authenticity.

I believe the automated verification system is incorrectly classifying the document.

Hello,

This issue is caused by a known automated optical character recognition parsing limitation within GitHub's academic validation scanner where the system incorrectly classifies your official YOK Student Enrollment Certificate as an acceptance letter. To fix this misclassification log into your e-Devlet Gateway portal search for the YOK Ogrenci Belgesi service toggle the output language to English if available and then take a crisp screenshot focusing strictly on your name Istanbul Universitesi AUZEF your 4th-year active student status and the validation QR code instead of uploading the full-page PDF.

If the digital certificate continues to trigger the false warning switch your primary evidence upload to a physical item by placing your physical Istanbul University student ID card on a flat surface alongside a handwritten note showing the current date. Take the photo using your device's live camera directly through the GitHub application portal instead of uploading an old file so the scanner can verify your physical card.

Should the automated bot block you more than three times you can escalate your case for human intervention by opening a manual review ticket on the GitHub Education Support Portal. In your ticket explicitly state that your document is an official Student Enrollment Certificate rather than an admission notice provide the text details showing your active status and paste the YOK barcode verification URL from your QR code so support staff can instantly verify your active enrollment.

Regards,