Lost keys, replacement key not working?

Good day, thanks for all the assistance. I am expecting the arrival of the voltmeter next week. It is already in Nigeria. As noted in the software manual, can a failed or aborted PCM reprogram (maybe as the case of the key programming) be a possible cause of a blank PCM and be the reason the DLC is not communicating. If so, how can it be fixed? What are pinpoints checks to be carried out with the voltmeter to ensure the DLC is communicating or to solve the starting problem. I can see VREF and SGN RTN in the manual. Can they help resolve the issue at hand and how? Thank you very much for the contributions and God bless you.

Good day, I have not been able to communicate because of the issues that arise. The mechanic has indicated interest in purchasing the car, but I assured him after the car starts running and using it for a while. I disposed of it but maybe that didn't settle down with him. He has been frustrating every efforts. He came up with the idea that he misplaced the PCM. Authorities wade in the issue and gave him the opportunity to provide it. From what I read in the manual, for another PCM to work in the car. They have to transfer some modules from the old PCM into the PCM or call ford Center to get those information. If I am to seek a second technical and professional opinion from you. In the case he returned my old PCM, how do I know or test it that this is mine or does it go by the manual that they need to transfer some modules or call ford Center for a new PCM to be installed that can work with my car. I really appreciate every of your concerns and I am sorry he is putting everyone through all these. Thanks so much and God bless you.

I Googled one at $267 on Ebay with keys and already programmed. You can also make your recommendations when I see the one, he will bring gets tested. Whichever way that will work. Thanks very much for time and God bless you.