Hello,
I understand you are finding a person who will help you deobfuscate a .net dll. I have been working as a reverse engineer for a long time. Since you haven't provided the dll, I'm not sure if it is possible or not but I have experienced in this field. I think I can help you with this. I hope we will discuss this project so I can start working soon. Thank you very much.
Best regards,
Binh