karloshull As they mentioned that Kunena template - Aurelia requires a Joomla template that uses Bootstrap 5.
Our template JA Edenite II template was developed long time ago and it's built with Bootstrap 3 only and it doesn't support Kunena by default.
There are options here:
1) If you continue to use JA Edenite II template, you need to add custom CSS style to override Kunena for Bootstrap 5
2) Switch to another template from us, a template is built with T4 framework