Repair a bug in a module adding UTF-8 - Kunena latest posts

We have a website called [login to view URL] There is a forum (Kunena) and latest posts are written on the frontpage. The module has a bug with foreign languages (We need to add Thai). It makes crazy characters... We posted the bug here: [login to view URL] The work is to repair this bug so this website module works well with foreign or English posts. If you can not repair this bug, you won't be paid. We would like it to be completed in about 3 days. Thanks.