Hello Sophie,

I was able to translate your homepage using this guide:

You will want to go to String Translation section:

Than you can fill the Services setion just like the one above. You should tick the desired row, change its main language to French (there is a button just below this section), then fill the correct Page ID of the translated page. In your case, the services pages are:
– English:400
– French:389

Please give it a try and let me know if there are any problems.