The procedures of closing a company loan in the UAE while being away

I posted a question about closing a large business ($400.000) loan for our Florida start-up company to be manufacturing. We were told:

"... partners who reside in countries with travel restrictions or medical conditions will be represented by the UAE central bank legalization officer who shall oversee the entire process in their absence in line with UAE COVID-19 safety measures. Furthermore, you the beneficiary is expected to take full responsibility for the legalization cost of all documentation to be used in this transaction at the Dubai magistrate court with the assistance of the UAE central bank official who shall represent you in the entire process of this transaction."

The quoted fee was $6,800 to be paid in advance or at closing if we attend personally.

Does this sound like a legitimate procedure for using an agent to sign loan documents?

How can we conduct due diligence on this investment firm based in Kuwait to be sure we are dealing with the actual company?

Thanks.