Wouldn’t surprise me if they come up with a ‘plan B’ under the current lockdown / restriction situation as it could go on for months. Nigeria needs revenue so would think some of the red tape will have to lifted at some point soon.
Reason for f2f meeting is probably for wet ink signatures, even in the UK you can’t apply for a goods vehicle operating license without wet ink signatures, I’m sure all relevant parties want to witness any signing!?