There is a plug-in available in the Markterplace now called " Multi-Language Subscription Preferences ". This seems to work fine and installing it is more than easy. Only part which is not translated are the subscription types incl. their description.
Use this module to support multi-language Subscription Preferences. The module supports the following 18 languages:
- Chinese (China)
- Chinese (Hong-Kong)
- Czech
- Danish
- Dutch
- English
- Finnish
- French
- German
- Greek
- Italian
- Japanese
- Norwegian
- Polish
- Portuguese
- Spanish (Mexico)
- Spanish (Spain)
- Swedish
Simply replace the default Subscription Preferences module in your desired template, no additional edits are necessary.
The module will populate the language set in a user’s browser settings.