Wilson,
I felt sure you would have explored the possibility.
Wow the local authorities seem less helpful than over here, what ridiculous demands they made.
Yours must be the safest M3W in the world with your security measures, good luck with this.
Headley moved from Hiscox, as you know and they have covered my Plus 8 with ERS - I don't know if direct contact with them is possible for you to try.
P.S.
From a random internet search but giving 180 days continous cover, maybe worth a call.