Educational Certificates full name Issues

Hi all,

I'm a DV 2021 winner from Sri Lanka. Our embassy asks for the A/L certificate as it is regarded as the education qualification for the Green Card.

My issue is that my surname is not printed in my A/L certificate. For example,

Full Name: SURNAME Simon Peter Andrew
Name printed on the A/L certificate: Simon Peter Andrew

This is the same for my degree certificate as well. Anyway, the Sri Lankan embassy specifically instructs to fix all naming issues in the birth certificate, marriage certificate, and passport. But they haven't mentioned anything about educational certificates.

What can be done to resolve this issue (I checked with the examination department and they say they can't change the A/L certificate as it's too old)? I have already included A/L certificate name in the Other names section when filling DS-260.

Thanks in advance.