The Kunena team has announce the arrival of Kunena 18.104.22.168 [K 6.1.3] which is now available for download as a native Joomla extension for J! 4.2.x/4.3.x. This version addresses most of the issues that were discovered in K 6.1.0 and issues discovered during the last development stages of K 6.1
Question Kunena 1.6
He shows you a link where you can find a comment why there is no live demo where you can test Kunena. In this link they explain you can download it for free and test it on your own server.