Set a default position on a map using js – WordPress theme file

I try to create a wordpress directory website for french schools.

I have one issue, my theme “map service” do not allow me to define a default position on the map when it load. It automatically calcul the center point of all my markers and I don’t want that because of the french islands based all around the globe. I need the map to be, by default, centered on Metropolitan France (Latitude : 46.227638 ; Longitude : 2.213749).

I tried to reach the theme developpers but they are not willing to help me so I tried the whole afternoon to find a solution by my own but I barely can read Javascript so all my modifications attempts failed…

If there is anyone with a bit of time to analyse the theme file that load the map (HERE is the file) I would love to have some help, it would mean a lot!

My apologies for my bad english.

Thanks by advance to everyone that took some times to read my message.

Jonathan