I'll suggest documentation would be key. Bureaucrats love paper work. Do you have an open line of communication with Kadeau? Can you get a letter of explanation or introduction from Kadeau that you can show the embasssy?
I don't know what your time line is because this might take some days or weeks to sort out but I would start by going to the embassy and explaining the situation (if you haven't done so already). Don't assume a. negative response. They have most likely encountered something similar before and have a process for handling it.
Bring all the communication information with you like emails, addresses, etc. for everyone involved. And there will probably be some fees involved so having some money ready would be a good idea too.
I don't know what your time line is because this might take some days or weeks to sort out but I would start by going to the embassy and explaining the situation (if you haven't done so already). Don't assume a. negative response. They have most likely encountered something similar before and have a process for handling it.
Bring all the communication information with you like emails, addresses, etc. for everyone involved. And there will probably be some fees involved so having some money ready would be a good idea too.