It appears that Humanity First is active in Guatemala and they have found funding to run a clinic there. Dr. A. Latif, a doctor with Humanity First there, wrote this invitation also. Note the name of the organisation: Comunidad Musulmana Ahmadia — and then look at the email address — ‘islam’.org.gt. Now do you see why their main site is alislam.org. They used to own ‘ahmadiyya.org’ but gave it up to the Lahoris.
Following it is a picture from the gathering.
What is their goal? We can only guess: to have at least some part of the world where the word Islam is defined with the Qadiani Ahmadiyya. This is not going to happen, as even if it happens temporarily, the world is a much smaller place now.