Today I received the answer from the European Consumer Center (France) and after #Stuxhost was contacted by them, he finally refunded me!
In short, do not use #Stuxhost (@Stuxhost) to host your servers. And don't use https://mstdn.social either, Mastodon server of @stux.
Btw @stux, I still get EVERY NIGHT at 1 am your fucking emails asking me to pay for something I already paid! Please stop, that's what they call harassment.
Gregory's Server
In short, do not use #Stuxhost (@Stuxhost) to host your servers. And don't use https://mstdn.social either, Mastodon server of @stux.