When it comes to state consent approval for the sale and purchase of leasehold property, the nationality of the seller bears no weigh.

Did you ask for the presentation receipt of the state consent application?

Sometimes, legal firms tell you things that they haven't done yet. Whatever it is, the outcome of the application should be released between a period of 3 - 4 months from the date of submission, not the date of the sale and purchase agreement.

Whatever it is, there is nothing you can do now to expedite the process UNLESS..... you go over and ... you know what comes next.