Inelegible due GPA on an Summer Research Scholarship (New Zealand)

Hi everyone, my very first post here.

I’m from Chile (LATAM), and I’m asking right here because there are no good College-Talking forums in spanish. Currently I’m studying Medicine in a well ranked University in my country (year 5th of 7th).

On July I decided to apply for a Summer Research Scholarship in an university in NZ, but now I received an email saying “We will not be taking your application forward as it doesn’t meet one or more of the eligibility criteria as outlined below: GPA/GPE didn’t meet the cut off of 6.0 or 5.5 (for Māori & Pacific applicants).”

The mails ends with “Please note that we will not enter into details of individual applications.” and is signed by a “Manager, Scholarships and Graduation”

NZ grade Scale goes from 1.0 to 9.0, but in my country, grading scale goes from 1.0 to 7.0, with minimum-passing of 4.0. my chilean-GPA is 5.4, but after transforming to NZ-grading went to 5.2

Yes, I know that sounds mathematically unexplainable, but official GPE Calculator page of the University says that.

My doubts about this are:
What should I do?,
A ) Keep quiet, try to get a better GPA and apply for the next year?

B ) Send a reconsideration letter

I must say that before apply I contacted some researchers which were offering vacants on their Research-Projects (in Scholarship context). Many of them said to me that I have a great CV. So, there's another option:

C ) Contact them (researchers) and tell that I won’t be on their projects because of my GPA, and give greetings for showing interest on me.

Thank you so much in advance!