I haven't received my official transcript yet because I still owe the University some money. I am been working without my transcript. Can I extend my OPT with the degree audit instead of the copy of official transcript or diploma? I can print and download degree audit from my university website.

Thanks

You need a recommended I-20 for OPT extension. Ask your international adviser. Additionally, you need your passport, previous I-20, and most important your employer's e-verification number. Without a e-verification number, you cannot extend your OPT.