This should be a Feature Request requesting support for a specific language, which is an on-going effort in terms of localisation on the whole for all languages. Please move your post accordingly.
Before mentioning anything like “I can’t post in that category”, the post approval procedure is there for you and explains how to post there.
As mentioned above, please file a feature request using post approval for Thai language support, engineers won’t be looking in the Developer Forum Feedback category for engine feature requests.