I’m not an administrator or maintainer, but I saw your post and don’t want you to think that we are ignoring you.
You won’t be able to use the openHAB logo if you build your own website or community, for reasons that I won’t go into.
I also think translating openHAB would be very difficult, since it is open-source software that’s maintained by volunteers. The software and documentation changes constantly, so you would spend all of your time translating. We wouldn’t be able to help with that.
I believe that it would be difficult to create a sub-category for your language in our community, because the search function would probably not be able to tell between English and non-English posts. So, when non-English speakers search for help, they would probably get a lot of English posts that won’t be helpful. As well, it would be very difficult for us to provide direct assistance in your language.
I wish we could do more to help you and other non-English speaking users. However, I don’t see many options. Even though openHAB was started in Germany, it was developed in English.
For now, I think the best thing your users could do is to use Google Translate. As an alternative, you and other English speakers could volunteer to search this community on their behalf and translate the answers you find for their use.