For those that are interested...
Problem was:
I had installed EuroAO with selected language "German".
So it was not possible for me to log in Thanatos server (French) due to language settings....
AO has saved the language settings in the file:
AO_FOLDER/PatchInfo/PatchInfo.ndt (not cryped):
Code:
<Data> [Default Language] GER [Live HomePage] http://de.atlantica.nexoneu.com/ [Live PatchText URL] ....
to be able to access Thanatos (French Server) just change it to:
Code:
<Data> [Default Language] FRA [Live HomePage] http://de.atlantica.nexoneu.com/ [Live PatchText URL] ...
if you want to go back go german servers, just change it back....
Like this you don't need to install 2 Atlantica for the European Servers...