Apparently there is no way to change the language. I wish Ubi Shop would at least check the language of the operating system. It really makes no sense to force a language based on IP address. There are many cases where this is a problem:
What if someone is travelling in another country and does not speak the local language? What if someone LIVES in another country and does not speak local language (very common for person to work in another country and not speak the local language at all, instead using English as the common language).
Please Ubisoft fix it.