Agree with Habari
Timothy J. Roman should be given a wide (no pun intended) berth. He probably hasn't answered your e-mails because he either thinks you may be one of his MANY creditors, or he does not have the cash to pay for your services. Roman owes hundreds of thousands of dollars to former (and present?) employees and business associates. He typically avoids communication with them and all creditors. Roman still owes many of his employees (both Congolese and foreign) MANY months of unpaid salaries, "company" expenses and personal loans. Basically, he is a man with zero honor.
Good luck, be safe, and STAY AWAY from Tim Roman